La Russa removed his starter, right-hander Bob Welch, in favor of lefty Greg Cadaret, who induced the left-handed-hitting Scioscia to pop up harmlessly to third.
On Tuesday, lefty Kilgus allowed one run in six innings, batted in a run and scored another in a 4-2 triumph.
"I'm told that only about 7% of the people who play golf play lefty, but I never thought it was a handicap." It was no handicap to Mickelson over a week in which he played 150 holes through a 36-hole medal qualifier and six rounds of match play.