Lyle followed that with a birdie on the 15th hole to move to the top of the leaderboard as played the back nine in 32 .
Lyle joined the Seniors Tour after turning 50 in February .
Lyle , who joined the Seniors Tour after turning 50 in February , followed that with a birdie on the 15th hole to move to the top of the leaderboard as played the back nine in 32 .