‘Mularkey balks at saying he strictly adheres to Walsh’s West Coast offense, but he does abide by some of its principles — throw quick, short passes, run the ball and eat up the clock. Mularkey spent the previous three years as the Steelers offensive coordinator. “He is a players’ coach,” said 49ers running back Ken Simonton, who played for the Bills last season and was cut by them after this year’s training camp. “He hasn’t lost connection with what it’s like to be a player and guys respond to that.” “He knows a lot about football,” Bills running back Willis McGahee said in a conference call this week. “He knows we can be a dominant run team and pass team.”‘