(l-r : Alex Smith, Matt Cane. Can’t wait to see the latter wearing a Niners helmet during BP)

The San Jose Mercury News’ Cam Inman reports the latest pro football star to run afoul of the NFL is Golden Tate Michael Turner 49ers QB Alex Smith, warned by the league he faces a $15K fine if he turns up for another postgame press conference sporting a San Francisco Giants cap.

The reason: A Giants cap constitutes non-sponsored gear, and players must abide by the NFL’s dress code 90 minutes before and after each game.

One proposed solution: Have the Giants fund that post-game attire for such a loyal fan.

“Yeah, can you call Larry Baer for me?” Smith asked reporters in reference to the Giants’ chief executive.

Smith said the league retracted an initial fine of $15,000 and instead issued him a warning to discontinue such headgear. The man who imposes such fines: former 49ers safety Merton Hanks, who works in the league office.