Jake Knapp withdrew Thursday from the Sony Open in Hawaii before his first-round tee time due to a back injury. Knapp, who won the Mexico Open last year for his first PGA Tour victory as a rookie, finished 56th last week at The Sentry.

Hideki Matsuyama is $3.6 million richer after winning last week's Sentry, the PGA Tour Signature event at Kapalua, in Maui, Hawaii that opened the Tour season. He and 34 other players at Kapalua are now in Honolulu this week to try and add to their head start on the Tour money list.

The PGA Tour's Hawaiian Swing makes its second stop this week at the Sony Open, at the historic Waialae Country Club. Last week's winner at The Sentry, Hideki Matsuyama, leads 35 players who competed at the short-field opening event in Maui and are making the quick hop to Honolulu for the first full-field tournament of the season.