Bernhard Langer and Mark Wiebe were tied after two playoff holes Sunday night in the storm-delayed Senior British Open when darkness suspended play at Royal Birkdale.
They will finish the playoff Monday morning.
Wiebe shot a 4-under 66 to match Langer at 9-under 271. Langer had a 70.
They each parred the par-4 18th twice in the playoff.
Langer, the 2010 winner at Carnoustie, blew a two-stroke lead with a double bogey on the final hole of regulation after hitting into a greenside bunker. Minutes earlier, Wiebe's birdie putt at No. 18 came up short.
Corey Pavin, Peter Senior and David Frost tied for third at 6 under. Pavin shot a 65, Senior had a 66, and Frost a 70.