Kyren Wilson squanders chance to make 147 in eighth frameDavid Gilbert leads twice before being pegged back to 4-4
Kyren Wilson and David Gilbert could not be separated at the end of the first session of their World Snooker Championship semi-final at the Crucible.
They finished all-square at 4-4 with Wilson, the only seeded player left in the tournament, having to fight back after trailing 3-2 and then 4-3 in a finely balanced all-English clash.