Some 49ers players were upset at the perceived lack of respect some fans showed when quarterback C.J. Beathard got hurt and Jimmy Garoppolo warmed up late in Sunday’s 24-13 loss at Levi’s Stadium to the Seattle Seahawks. What was left of the crowd began to cheer when Garoppolo ran onto the field for his 49ers debut that would cover the final three snaps. Linebacker Reuben Foster felt the crowd was cheering before Beathard got up, knowing they would get a chance to see Garoppolo take a snap for the first time in a 49ers uniform. “First of all, I wanted to say our fans are better than that,” Foster said. “You wait until a guy gets up to cheer, not when a guy’s down. Then when he’ s up, you cheer. “Then when Jimmy goes out there, you cheer. Give him a pep talk, let him know you’re all behind him. But let him you you’re behind our (starting) quarterback, too, C.J..” There were only a few thousand fans still in their seats when Beathard was hurt with 1:07 left in the fourth quarter. Rain had moved in and the Seahawks had taken a 24-6 lead with 3:27 to go. “I don’t think it was malicious by our fans, that they were cheering he was injured,” left tackle Joe Staley said. “They were excited. But at the same time, you can’t do that.” Beathard, who had taken all kinds of abuse from Seattle’s defense Sunday, drove the 49ers inside the Seahawks’ 23 when he absorbed a hit from defensive end Michael Bennett. Beathard remained on the ground for several minutes and said he did not hear the crowd’s reaction.