F-3: Low 15 scorers and ties from 2025 U.S. Senior Open
F-11: Winner of 2022 Senior PGA Championship
F-15: Players who qualified for 2025 season-ending Charles Schwab Cup Championship
F-19: Winners of PGA Tour Champions co-sanctioned events between the 2025 U.S. Senior Open and the initiation of the 2026 championship

The Kiwi with 22 worldwide professional victories has made his biggest mark since turning 50 and joining the PGA Tour Champions. Alker owns one senior major with his triumph in the 2022 Senior PGA Championship. He has won 10 times on PGA Tour Champions, the last coming at the 2025 Simmons Bank Championship. In 2023, he won the Charles Schwab Cup Championship at Phoenix Country Club, edging Ernie Els and Stephen Ames by a stroke. Since turning pro in 1995, he has competed on a variety of circuits, including the European Tour (now DP World Tour).