CARSON, Calif. -- For a second straight season, the Los Angeles Chargers have failed to find stability at the kicking position.

And for a second year in a row, that instability could cost the Chargers a chance to make the postseason.

Caleb Sturgis won the kicker job over Roberto Aguayo in training camp, but through four games, Sturgis has missed two field goals -- from 48 and 54 yards -- and three extra points. Three of those missed kicks came during Sunday's narrow 29-27 win over the San Francisco 49ers.

Sturgis' inconsistencies have Chargers head coach Anthony Lynn examining what he will do at kicker moving forward.

"We have to wait," said Lynn, when asked if he plans to make a change at kicker. "It's the whole operation, not just the kicker sometimes. So we'll take a look at that. If we can't get better, then we'll have to do something. Right now, I can't say that."

Lynn has seen this movie before.

The Chargers had five different players handle field goals, kickoffs and extra points in 2017, including punter Drew Kaser. The Bolts finished a league-worst 67 percent on field goals last year.

Last season, the Chargers chose potential over experience, with Younghoe Koo earning the job over Josh Lambo.

The Chargers cut Koo, an undrafted rookie out of Georgia Southern, after four games. Koo had a potential game-tying kick blocked in the final second of a 24-21 Week 1 loss to the Denver Broncos last season, and then missed what would have been a game winner in the final seconds of the Chargers' 19-17 Week 2 loss the Miami Dolphins.

Overall, Koo finished 3-for-6 on field goal attempts last year while converting all nine of his extra-point attempts.

Signed by the Jacksonville Jaguars after his release, Lambo made 19 of 20 field goal attempts including a long of 56 yards and made a 30-yard field goal in overtime to defeat the Chargers in Week 10 last year.

Lambo has made 23 straight field goals (including playoffs) dating back to last season.

For his part, Sturgis said he's healthy and just has to strike the football more consistently.

"Obviously, it was extremely poor," Sturgis said, when asked to assess his performance Sunday. "To miss three kicks at this level is not good.

"I was just spraying things right today. I just have to hit the ball more solid. I did the same thing on every one, so I just have to take it as a positive that I'm not going right to left and bring it in a little bit."

Rivers said that Sturgis isn't the only one who has to get better at his job, acknowledging that he threw an interception for a score to start the game.

"It's such a mental deal," Rivers said. "You spray one in the water, I guess, off the tee box, and I really don't want anyone to say anything because I don't know where the next one is going, you know what I mean? [laughs] Not to make light of it, because it's a serious deal, and I know the work Caleb's put in and how consistent he's been, really.

"Through practice I haven't seen him miss one in a while. It is frustrating when that happens because it just puts a damper on the drive. But we were able to overcome that today, just like we were able to overcome the interception for a touchdown."