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First base coach Mark Budzinski is completely at fault for this.
Note that Vlad is watching the fielder, to know when the catch is made. Budzinski appears to be looking at Vlad's foot.
Vlad should be 'in the starting blocks', eyes focused on second base. The coach should be looking at the fielder. He's supposed to yell "Go! Go! Go!!!" as soon as the baseball touches the glove. When it's caught doesn't matter
*. If the runner obeys the coach's verbal command, he will never leave early. As is, Budzinski can't help with the challenge, because he's relying on his ears to know when the catch is made. Besides ambient noise from the city and spectators, there's the time lag based on the slow speed of sound as compared to light. Anyone who has seen a concert with video screens in a stadium is familiar with that.
*This rule prevents a fielder from 'half-catching' a fly ball, then juggling it forward to shorten the throwing distance.