So, what is regret?
Is it Blake suffering a Grade 3 muscle tear and weeping at the Douglas Diamond League?
Is it Ronaldo, substituted early in Rome in 2002, unable to hold back his tears?
Or Michael Owen, who caught up with the wind but could not outrun his injuries, struggling as he crawled off the field?
Is it McGrady saying “It’s my fault” eleven times at the postgame press conference after the first round of the 2007 playoffs?
Is it Yao Ming, forced to announce his retirement in 2011, in the prime of his career?
Is it Kobe, who tore his Achilles tendon in 2013, made his free throws, returned to the locker room, and could no longer hold back his tears?
Or is it Lin the Sensation, clutching his knee and telling the cameras six times, “I’m done”?
In 2000, at the dawn of a new century, Chen Yu walked out of Jackson Memorial Hospital in Miami. He looked up at the sky, ready to say no to all these regrets.