Hideki Matsuyama carded a 4-over 76 in Sunday's final round of the Memorial Tournament to finish seven strokes back as Norway's Viktor Hovland claimed the title in a playoff.
Hovland, a runner-up in last month's PGA Championship, shot a final-round 70 that left him tied at 7-under with American Denny McCarthy. The 25-year-old Norwegian sealed the victory on the first playoff hole.
Starting the final day two strokes off the pace, Matsuyama shot four birdies against four bogeys and two double bogeys to finish the tournament tied for 16th at an even-par 288.
He had surged into contention at the halfway point of the tournament with Friday's low round of 65, but he could not replicate the performance over the last two days on a challenging Muirfield Village course in Dublin, Ohio.
"It's a tough course with very difficult greens," said Matsuyama, who won his first PGA title at the 2014 Memorial. "I didn't have a great weekend but I learned a great deal. I just need to continue what I've been doing."
American Scottie Scheffler surged 29 places to finish third at 6-under, one stroke ahead of overnight co-leader Kim Si Woo of South Korea.