Henderson was fast and powerful in how he took bases, slamming headfirst into bases -- and wayward fielders -- like a linebacker, and undoubtedly, there were times in Henderson's career when he would come off the bag as he zoomed over it.
The slide step and streamlined deliveries: As pitchers work to make their mechanics more efficient, with less margin for error, some have refined their deliveries -- such as Stephen Strasburg, who pitches without a windup even when there are not runners on base.
In 2012, Strasburg gave up 14 stolen bases in 16 attempts.
"You have to be at 80 percent," said Pham, who was at the edge of that line last year, successfully stealing 25 bases in 32 attempts (78.1 percent).
Pham is correct -- through the use of analytics, teams have determined that if you are below 80 percent in your success rate, then you probably shouldn't run. Brett Butler stole more than 40 bases five times in his career, from 1981 to 1997.
Altuve's moneymakers are his hands and wrists; he needs to do what he can to keep that part of his body healthy.
The same is true for Mike Trout and Carlos Correa, who both tore thumbs running last year and missed many weeks.
But if he played in the current era, it's possible that his front office would've ordered his manager to hold him rather than have him get thrown out 28 times in 66 attempts, which is what happened in 1991.
The players whose value is built on the volume of bases they steal seem to be going the way of the ace pitcher who throws complete games.5.
Injuries: Ask any big-time baserunner about Rickey Henderson and his 1,406 steals and they will marvel at Henderson's endurance, particularly for someone who slid headfirst.