Shell Houston Open 2015, PGA Tour, Phil Mickelson, Jordan Spieth

AP

1 of 34

Getty Images

2 of 34

Getty Images

3 of 34

Getty Images

4 of 34

Getty Images

5 of 34

Jordan Spieth started the year with no status and reached the Tour Championship.

Getty Images

6 of 34

Getty Images

7 of 34

Getty Images

8 of 34

Getty Images

9 of 34

Getty Images

10 of 34

Spieth nearly won the Masters last year.

Getty Images

11 of 34

Starting the day one back of the lead, Phil Mickelson struggled to keep up with the leaders.

Getty Images

12 of 34

Getty Images

13 of 34

He will look to capture his fourth green jacket next week at Augusta.

Getty Images

14 of 34

Patrick Reed's five-under 67 included a hole-in-one at the 16th hole.

Getty Images

15 of 34

Keegan Bradley had a solid round and will be within striking distance on Sunday.

Getty Images

16 of 34

Austin Cook went low in the third round and battled for the lead all day.

Getty Images

17 of 34

One shot back of McIlroy with two holes to play, Mickelson hit two wedges into the water on the par-5 eighth and took a quadruple-bogey 9. His 71 dropped him to T28.

Getty Images

18 of 34

Though he failed to card a single birdie on Thursday, Mickelson dropped 9 birdies and an eagle on Saturday.

Getty Images

19 of 34

"I just love the fact I am in contention and have an opportunity in my first tournament of the year here in Abu Dhabi," Mickelson said. "The biggest thing for me is that each day as the tournament has progressed I have felt a lot sharper and sharper."