"We were grumbling because we lost the game," York said. "I think we grumble any time we lose a game."
Like Singletary, York is optimistic the 49ers can turn things around this season. York pointed out that the team needs to stop making mistakes and turning over the ball.
Singletary signed a four-year contract after the 2008 season, when he took over as the interim coach following Mike Nolan's firing and went 5-4. Singletary was 8-8 in 2009, his first full season.