The putt capped a roller coaster afternoon Sunday for Stricker, who led by five strokes when he made the turn, fell behind rookie Kyle Stanley by two shots on the back nine, then birdied the final two holes to close with a 2-under-par 69.
Stricker became just the 10th different golfer since World War II to win a tournament three straight times. He finished at 22-under 262 to beat Stanley by one stroke on the TPC Deere Run course in Silvis, Ill.
Stanley kept the lead by salvaging par on 17 after sending his tee shot into a grove of trees, but he missed a 101/2-foot par putt on 18 to open the door for Stricker.
No. 1 Donald rolls
The 33-year-old Englishman was a shot behind a trio of players sharing the lead going into the third and final round at the Castle Stuart links course in Inverness, but he rolled in nine birdies to cruise home at 19 under for the tournament, ahead of Sweden's Fredrik Andersson Hed, who fired a 62 -- the week's lowest score -- and finished at 15 under.
Donald's third victory of the year will provide him with a perfect tonic ahead of the British Open at Royal St. George's starting Thursday, where he'll attempt to land his first major.
Scotland's Scott Jamieson finished in a six-way tie for third at 14 under, clinching a qualifying berth for the Open.
Sluman hangs on
Jeff Sluman won the Champions Tour Nature Valley First Tee Open in Pebble Beach, Calif., by carding a final-round 2-under 70 for a three-round, 10-under total of 206. He beat David Eger, Jay Haas and Brad Bryant by two shots. -- AP