The two players have been going against one another during 1-on-1 and 11-on-11 drills during training camp. That kind of competition over the years has improved both Kittle and Warner. "Iron sharpens iron," as the 49ers like to say.
"I've definitely had a lot of battles with Fred, both pass game and run game," Kittle said via Zoom on Tuesday. "Fred's the heartbeat of that defense. He's the quarterback of them. It's been really fun. He has gotten a lot better."
Kittle remembers then-rookie Warner getting "cooked" on a route he ran during OTAs in 2018. That doesn't happen anymore.
"Now, he's definitely guarding those routes," Kittle explained. "He's reacting to all those plays. You can really tell how far he's come.
"He's an incredible linebacker. He was, in my opinion, a Pro Bowl linebacker last year, and I think he's going to be better this year.
"Just being able to play against him every day makes me a better tight end. It's just really fun to have someone like that on your team."
Warner's 118 tackles (per Pro Football Reference) led 49ers defenders by a significant margin last season, and even that was a drop-off from his 124 total during his rookie year. The third-year player proved he could be a force when it comes to the pass rush, too, adding three sacks to his statistics in 2019.
More San Francisco 49ers News
-
49ers' Renardo Green says Fred Warner is like a custom video game character
Fred Warner remains the heart and soul of the San Francisco 49ers defense. The All-Pro linebacker has continued to make his presence felt throughout the 2026 season, reinforcing his status as one of the NFL's best defensive players. After suffering a season-ending ankle injury... -
49ers announce update on George Kittle's game status vs. Seahawks
The San Francisco 49ers provided an update on All-Pro tight end George Kittle's status ahead of today's Week 5 matchup against the Seattle Seahawks at Lumen Field. "San Francisco 49ers TE George Kittle has an illness but is expected to play in today's game against the Seattle... -
49ers' George Kittle admits to asking John Lynch for trade intel, inquired about Khalil Mack
San Francisco 49ers general manager John Lynch says he's not sure why the team is constantly linked to players as a potential trade destination. He's certainly heard the speculation surrounding Los Angeles Chargers pass rusher Khalil Mack, and not just from fans. On Friday... -
Kyle Shanahan explains what it would take for 49ers to make a trade
Many expect the San Francisco 49ers to be buyers as the NFL trade deadline approaches. The team is 5-0 and has extended its NFC West lead. The 49ers believe they can contend for a championship, and expectations are growing that they will look to strengthen their roster. That...