Rider tricked Kobe and went outside the three-point line, in that game Rider was hitting a lot of 3-point shots just like Jake, after Jake's move, he wanted to make 3 points to decrease the advantage in points.
Rider stepped back and tried the shot from outside, but he didn't know that Jake expected Rider to do that and stop defending against Stoudamire and try to stop this attack, Rider jump to try the shot outside and Jake came right after and did the block.
Rider didn't expect Jake to make that block at the end of the game in a quick move like that, besides, Rider didn't even notice that Jake was approaching to try the block, Jake made the block and the ball went out.
The crowd was excited at the Great Western Forum with this block by Jake and realizing that the victory was close, the Portland Trail Blazers team still had possession of the ball, but it was only 6 seconds away and the pressure was even greater after this block by Jake.