The All-Star power forward is averaging 7.3 assists a game, more than Clippers point guard
"C.P. draws a lot of attention, so when he comes off of it, it's my job to facilitate after that," Griffin said. "Passing is always a point of emphasis, but I think defense and rebounding are two of the biggest things I've locked in on for this series."
Griffin is also leading both teams in rebounding, averaging 13.3 a game, more than Clippers center DeAndre Jordan's 12.8, and more than the Spurs' leading rebounder in the series,
In the Clippers' 114-105 Game 4 win over the Spurs on Sunday, Griffin finished with 20 points, 19 rebounds and seven assists.
At Monday's practice, Rivers praised Griffin's effort on the boards.
"Blake decided, well, I'm going to help the team by getting 20 rebounds," Rivers said.
The Clippers and the Spurs are tied at 2-2 in their best-of-seven series. Game 5 will be Tuesday at 7:30 p.m. at Staples Center.