Bruce Ellington

Anquan Boldin and newly acquired Torrey Smith will likely assume the top two receiving spots on the depth chart, but the No. 3 job appears to be an open competition. The list of pass-catchers competing includes Quinton Patton, Jerome Simpson, Bruce Ellington, Chuck Jacobs and the 49ers five undrafted free agents.

A few months back, Patton seized the opportunity to train with Kaepernick in Arizona.

Chemistry is key for quarterbacks and receivers, especially for a pass-catcher trying to become a staple in the 49ers offensive game plan.

“It benefited me just to know that we were throwing the ball together,” Patton said. “He was telling me what he was seeing and I was telling him what I was seeing and just knowing where to be. He worked on everything he needed to work on, and I worked on everything I needed to work on. It worked hand in hand.”

The 49ers haven't thrown the ball that much in recent years so it's difficult to see a WR3 in this system having much of a fantasy impact. But if either Boldin or Smith suffer an injury, Patton may be able to capitalize.