Jenson Button believes Fernando Alonso put his Championship ambitions before glory in Monaco over the weekend.
After winning the Spanish Grand Prix, Alonso found himself battling the midfield runners during Sunday's race around the streets of Monte Carlo and he eventually settled for seventh position.
Instead of risking all to move closer to the front, the Ferrari driver decided it was best to make sure he just finished in the top 10 and not crash out and lose valuable points.
Button, who was one of several drivers who passed Alonso on the track, believes the Spaniard is keeping his eye on the big prize: the Drivers' Championship.
"They always say at Monaco the cream rises to the top," the McLaren driver told Press Association Sport.
"If you put yourself in a good place in qualifying that is maybe the case, but in the race I'm not so sure.
"I think the brave will always do well around Monaco, but there's a fine line between bravery and something else.
"You can see that with Fernando, someone who is regarded as the best in F1, yet who went backwards.
"He made moves he felt were correct, but he was hurt by those. Other people were able to overtake him because he didn't push the boundaries.
"I overtook him because I had tried to overtake in one place and I dived down the inside at another.
"Fernando is obviously fighting for the Championship, and you could see that with the way he drove.
"You can see the difference between someone who wants to do well in one race and someone who is thinking about 19 races.
"Fernando is an intelligent driver, but that probably hurt his result in Monaco."
Button's McLaren team-mate Sergio Perez had another drama-filled race as he not only produced excellent overtaking moves on Button and Alonso, but also made contact with Kimi Raikkonen, which pushed the Lotus driver back to 10th.
"His move on me was good," added Button.
"He caught me unaware, it was unexpected, so that was fine, although from what other people have said he pushed a bit too much elsewhere.
"For me, the biggest issue was on the first lap when I made some good moves on him, they didn't come off, he turned in, gave me no room and went straight on at the chicanes.
"He did that because he knew he would have had to have let the place go, so he got penalised for that. It's all done."