Stricker increases lead to 6 shots in U.S. Senior Open. IND.» SOUTH BEND,

Steve Stricker opened a six-stroke lead in the U.S. Senior Open at Notre Dame, shooting a 4-under-par 66 and extending his bogey-free run to 48 holes. Seeking his second senior major title after winning the Regions Tradition by six strokes in May in Alabama, the 52-year-old Stricker had a tournament-record 18-under 192 total on the rain-softened Warren Golf Course.

Fellow Madison, Wis., player Jerry Kelly was second after a 70.