Background: Philip Alfred Mickelson (born June 16, 1970), nicknamed Lefty, is an American professional golfer. He has won 43 events on the PGA Tour, including five major championships: three Masters titles (2004, 2006, 2010), a PGA Championship (2005), and an Open Championship (2013). Mickelson is one of 16 players in the history of golf to win at least three of the four majors. He has won every major except the U.S. Open, where he has finished runner-up a record six times.
Context: In 2010, Mickelson won the Masters Tournament on April 11 with a 16-under-par performance, giving him a three-stroke win over Lee Westwood. The win marked the third Masters victory for Mickelson and his fourth major championship overall. Critical to Mickelson's win was a dramatic run in the third round on Saturday in which Mickelson, trailing leader Westwood by five strokes as he prepared his approach shot to the 13th green, proceeded to make eagle, then to hole-out for eagle from 141 yards at the next hole, the par 4 14th, then on the next, the par 5 15th, to miss eagle from 81 yards by mere inches. After tapping in for birdie at 15, Mickelson, at -12, led Westwood, at -11, who had bogeyed hole 12 and failed to capitalize on the par 5 13th, settling for par.  Westwood recaptured a one-stroke lead by the end of the round, but the momentum carried forward for Mickelson into round 4, where he posted a bogey-free 67 to Westwood's 71. No other pursuer was able to keep pace to the end, though K. J. Choi and Anthony Kim made notable charges. For good measure, Mickelson birdied the final hole and memorably greeted his waiting wife, Amy, with a prolonged hug and kiss.  For many fans, Mickelson's finish in the tournament was especially poignant, given that Amy had been suffering from breast cancer during the preceding year. Mary Mickelson, Phil's mother, was also dealing with cancer. CBS Sports announcer Jim Nantz's call of the final birdie putt, "That's a win for the family," was seen by many as capturing the moment well.  Tiger Woods had a dramatic return to competitive play after a scandal-ridden 20-week absence; he was in close contention throughout for the lead and finished tied with Choi for 4th at -11. Mickelson and others showed exciting play over the weekend, and the 2010 Masters had strong television ratings in the United States, ranking third all-time to Woods's historic wins in 1997 and 2001. Mickelson's win left him second only to Woods in major championships among his competitive contemporaries, moving him ahead of Ernie Els, Vijay Singh and Padraig Harrington, with three major championships each and each, like Mickelson, with dozens of worldwide wins.
Question: What was his final score?

Answer:
he was in close contention throughout for the lead and finished tied with Choi for 4th at -11.