"I don't have a reaction, really," Fisher said during Thursday morning's shootaround before Game 4. "Everybody's entitled to their opinion. I'll just keep doing my job. I'm sure he'll keep doing his job."
Fisher drew three offensive fouls in Tuesday's Game 3, one on Kendrick Perkins in the first quarter and two more on Ray Allen in the second and fourth quarters. He scored 11 of his 16 points in the fourth quarter to lead the Lakers to a 91-84 victory and put them up two games to one in the best-of-seven Finals.
When asked Wednesday how Fisher was able to be so successful drawing fouls while being screened, Rivers replied: "What? Besides flopping? He doesn't do a lot extra.
"He plays hard. He's been in the game long enough to understand. I thought he got away with a lot last night. I thought there was a lot of holding going on and a lot of flopping going on and he finally showed that last one."
But Fisher wasn't biting Thursday.
"What do they expect him to do?" Fisher said. "He's coaching a team trying to win a championship. He'll pull out every stop, so just play."
Fisher said he received no additional fuel from Rivers' comments or Paul Pierce telling fans at Staples Center the series wasn't returning to L.A.
"I've said before, if you're in this position, and you're still needing for people to say things to write things to motivate you, then this is not where you want to be.
"There's motivation enough within. That's what you stay focused on, and that'll get the job done."
ESPNLosAngeles.com Lakers writer Dave McMenamin contributed to this report. Andy Kamenetzky covers the Lakers for ESPNLosAngeles.com and is co-author of the Land O'Lakers blog.