49ers’ Colin Kaepernick rages against fan on Twitter

This is my Friday column. Dear Colin, Even though you are 27 years old and have been a starter in the NFL for three seasons, you still lack a quarterback’s temperament. It troubles me. You actually pick fights with fans on Twitter. You picked one on Wednesday. Let’s analyze what you did. This is a teachable moment. At 3:37 Wednesday afternoon, you tweeted the workout you did that day: “1000…

February 19, 2015

Raiders flop at free agency

This is my Wednesday column. WARNING: This is a Raiders column. 49ers fans — feel free to skip this. You’ve got to wait on Raiders’ general manager Reggie McKenzie, give him a chance. Don’t judge him on his first two horrible seasons. Those weren’t his fault. He had to tear down Al Davis’ mess. You can’t judge McKenzie until Year 3. Fifteen minutes into Year 3, McKenzie flopped. McKenzie let…

March 12, 2014