For those of you that keep saying that Johnson has the advantage in the 40 or 50, look at the 100m race in the beginning of the video Vegita put up. Bolt is already ahead at the 2.5 - 3 second mark.
[quote]ntr wrote:
http://www.sportsscientists.com/2009/08/analysis-of-bolts-958-wr.html
I found this by googling for the splits. I thought I remembered some seeing some unofficial splits which showed that he started to slow down at the 80-90 meter portion, but these official splits only come in 20’s so you can’t really tell. Still, you can tell that he keeps accelerating past 60 meters and that he is ahead pretty much from the start.[/quote]
there is no acceleration beyond 60.
[quote]JLu wrote:
[quote]FightinIrish26 wrote:
Uhh… where does that article say anything about beating Bolt?
They’re talking about Ted Ginn. [/quote]
There’s a direct quote from Johnson saying he thinks he could beat Bolt in the 50m, and one of his teammates saying something about how nobody understands how fast he is and that he could probably beat Bolt in the 100m.[/quote]
his teammates actually do not understand how fast a world class sprinter is…
http://www.pro-football-reference.com/blog/?p=582
This guy is bringing up all the points that are being missed here.
I think it is clear Bolt wins at the 100m distance.
There are alot of factors in the shorter distance.
Chris Johnson is a world class athlete by all means.
It would be very close.
There are some good comments in that link but I think all the conversion factors/extrapolating aside, a very powerful issue is that Bolt’s WR time was the culmination of peaking for a single event, everything being in tune, perfect surface, shoes, etc. and running his best time EVER. And you’re comparing that and attempting to extrapolate data versus a football player running at a combine under less than ideal conditions who is training for football, and not necessarily to be the WR holder in the 40 yard dash. My guess is that the football player could consistently hit that time plus or minus while Bolt would not be able to randomly duplicate his WR time. My guess is that over 40 yards, this is a close race.
[quote]ntr wrote:
http://www.sportsscientists.com/2009/08/analysis-of-bolts-958-wr.html
I found this by googling for the splits. I thought I remembered some seeing some unofficial splits which showed that he started to slow down at the 80-90 meter portion, but these official splits only come in 20’s so you can’t really tell. Still, you can tell that he keeps accelerating past 60 meters and that he is ahead pretty much from the start.[/quote]
Interesting. So in the fastest 100 meters ever run. The 40 mark was reached in 4.64 seconds. This was timed electronically also right? I’m thinking all these nfl players running 4.2’s or whatever in the 40 is largley related to the inaccuracy of hind timing. There is no way chris Johnson would have been 4/10’s ahead of bolt in that race at the 40 and then gotten crushed over the last 60 meters by almost a full second.
V
It’s kind of disturbing that the would-be outcome of this race is even debated.
[quote]daraz wrote:
It’s kind of disturbing that the would-be outcome of this race is even debated.[/quote]
I think people would watch it if they had some famous athletes racing on tv, enough to draw in some decent ads. The athletes should really try to make it happen.
take some of the top athletes from each sport and have them compete against each other.
[quote]Vegita wrote:
[quote]ntr wrote:
http://www.sportsscientists.com/2009/08/analysis-of-bolts-958-wr.html
I found this by googling for the splits. I thought I remembered some seeing some unofficial splits which showed that he started to slow down at the 80-90 meter portion, but these official splits only come in 20’s so you can’t really tell. Still, you can tell that he keeps accelerating past 60 meters and that he is ahead pretty much from the start.[/quote]
Interesting. So in the fastest 100 meters ever run. The 40 mark was reached in 4.64 seconds. This was timed electronically also right? I’m thinking all these nfl players running 4.2’s or whatever in the 40 is largley related to the inaccuracy of hind timing. There is no way chris Johnson would have been 4/10’s ahead of bolt in that race at the 40 and then gotten crushed over the last 60 meters by almost a full second.
V[/quote]
One problem with that. You’re taking bolt’s 40m mark and trying to compare it to johnson’s 40yard mark. It doesn’t convert that simple. 40m is 43.75 yards. So if you do the math I believe bolt’s 40m time would equal 4.24 for a 40 yard sprint. I think you’re all overestimating how fast sprinter would run the 40, considering they dont train for that short of a distance. The 100m to 40 doesn’t carry over as well as you think.
does anyone know what desean jackson can run? I know deion supposedly ran a 4.18, ginn a 4.17 and some guy that deranco trains ran a 4.16.
[quote]Houston07 wrote:
Agreed. No way in hell does Chris Johnson even come close to Usain Bolt. Having said that, IF he were to somehow get close to him, it would be in the 50. At least he got that part of the statement right. Vick in his prime would also have beaten Johnson (Vick ran faster than a 4.24 at the combine). Bottom line, Johnson should worry about breaking 2,000 and less about personal glory of a nonexistent stat. [/quote]
People forget that the 40 time starts when the athlete moves. Sprinters have to react to a gun going off. A top level Olympic 100m sprinter versus a current NFL player wins every time at every distance up to 200m and probably up to 400m
Those that fail to see the difference in running 40 yards and 100 meters should not be posting here.
[quote]money24 wrote:
[quote]Vegita wrote:
[quote]ntr wrote:
http://www.sportsscientists.com/2009/08/analysis-of-bolts-958-wr.html
I found this by googling for the splits. I thought I remembered some seeing some unofficial splits which showed that he started to slow down at the 80-90 meter portion, but these official splits only come in 20’s so you can’t really tell. Still, you can tell that he keeps accelerating past 60 meters and that he is ahead pretty much from the start.[/quote]
Interesting. So in the fastest 100 meters ever run. The 40 mark was reached in 4.64 seconds. This was timed electronically also right? I’m thinking all these nfl players running 4.2’s or whatever in the 40 is largley related to the inaccuracy of hind timing. There is no way chris Johnson would have been 4/10’s ahead of bolt in that race at the 40 and then gotten crushed over the last 60 meters by almost a full second.
V[/quote]
One problem with that. You’re taking bolt’s 40m mark and trying to compare it to johnson’s 40yard mark. It doesn’t convert that simple. 40m is 43.75 yards. So if you do the math I believe bolt’s 40m time would equal 4.24 for a 40 yard sprint. I think you’re all overestimating how fast sprinter would run the 40, considering they dont train for that short of a distance. The 100m to 40 doesn’t carry over as well as you think.
does anyone know what desean jackson can run? I know deion supposedly ran a 4.18, ginn a 4.17 and some guy that deranco trains ran a 4.16.[/quote]
I think D-jackson runs a 4.35
People tend to forget that Ted Ginn Jr was once the fastest high schooler in the nation. I doubt Chris Johnson is the fastest guy in the NFL. Jamaal Charles would probably have something to say about thae being that hes run 10.1 for 100 meters.DeSean Jackson…Jabari Greer was a Ncaa Champion in the 110 hurdles…Countless other guys that are fast, they just dont get to put it on display…4.2 is good in the 40 but there are plenty of track guys who take offense to that in the NFL.
And to add to that,40s when the person moves,so no doubt dude can move…He can accelerate and hold top end pretty well.
He has the fastest 40 time in NFL combine history.
When you put 2 people side by side,different things happen…
If Johnson can still run a 4.24 40yd, it’s not unreasonable that he could beat Bolt. There are no 40yd splits on Bolt, but there are 40m times. Assume that Johnson can hold his 40yd speed for an extra 3 yards or so and tack on an extra 0.05. Assume he has a comparable reaction time to the gun (about 0.14) and tack on 0.24 to account for the hand-start.
Johnson: 4.24 + 0.05 + 0.14 + 0.24 = 4.67 theoretical 40m time
Bolt’s 40m split when he ran the world record was 4.64
A lot of variables there obviously, but it’s not inconceivable. Also, remember that just because somebody CAN run a certain time doesn’t mean they WILL- just ask Asafa Powell! The numbers seem to suggest that Johnson’s best is close enough to Bolt’s best that Johnson could beat Bolt in a 40-yard race where Bolt is not running his best.
There is also one final piece to this that you can look at from a mathematical standpoint.
The combine is timed by a hand-start and an electronic finish. I believe to proper conversion for this is to add 0.24 seconds to the time to convert it to fully-automated timing. However, obviously a hand-start does not always give a hand-timed runner a 0.24 second “advantage.” If you buy that the error is normally distributed, then it reasons that occasionally you get a slow timer (that maybe is off by 0.32) or a super-accurate timer who is only off by 0.16. This is fairly common sense.
However, you gotta think that there’s a selection bias. That is, in order for a time to be amongst the fastest times in combine history, it is likely that it was recorded by one of the fastest players AND done by a slow-starting hand-timer. I have no idea what a standard deviation would be for this, but it seems like it’s entirely possible that it could be as much as 0.13 or so. Thus, it’s possible that, if fully electronically timed and starting from a gun, Johnson could be all the way back in the 4.80 40m range, which would still be freakishly fast, but more along the lines of what Chambers, Burns and Patton ran at Beijing and quite a bit back from Bolt.
Food for thought.
[quote]PureBreeze wrote:
When you put 2 people side by side,different things happen… [/quote]
Okay?
[quote]Eielson wrote:
[quote]PureBreeze wrote:
When you put 2 people side by side,different things happen… [/quote]
Okay?[/quote]
I hate that I have to elaborate on this but just because someone can run fast by themself, that doesnt mean they can run fast with someone next to them giving them pressure or in the track world we call these people Asafa Powell’s.
[quote]PureBreeze wrote:
I hate that I have to elaborate on this but just because someone can run fast by themself, that doesnt mean they can run fast with someone next to them giving them pressure or in the track world we call these people Asafa Powell’s.[/quote]
I think that’s a bit unfair on Powell, he has achieved a lot, despite the fact he has not lived up to his potential recently. I mean, he is has run under 10s more times than any other sprinter, and he set a WR which is still the 3rd fastest time in history. This football player has achieved nothing as a sprinter.