Conversation so far:
Which college did Phil Mickelson play for?
Phil Mickelson attended Arizona State University in Tempe on a golf scholarship.
Who did Phil Mickelson play with in college?
Phil Mickelson led the Arizona State Sun Devils to the NCAA team title in 1990.
What did Phil Mickelson do after college?
Mickelson quickly turned professional. He bypassed the tour's qualifying process because of his 1991 win in Tucson, which earned him a two-year exemption.
What did Phil Mickelson win in college?
Phil Mickelson won three NCAA individual championships and three Haskins Awards as the outstanding collegiate golfer.

Question: what hand did he use ro play golf
Self-contained rewrite: What hand did Phil Mickelson use to play golf?