PALM HARBOR, Fla. — Justin Leonard walked toward the 12th green Saturday at Innisbrook and saw a scoreboard that showed he was tied for the lead in the Tampa Bay Championship. He knocked in his 8-foot birdie putt, assumed he was ahead, and then never looked at another board the rest of the day. He might do the same Sunday. There’s no point in staring at scores, not with so many names separated by so few shots. Besides, the Copperhead course at Innisbrook is playing so difficult even in pleasant weather that it’s best not to think about anything except …