Michael Allen (Getty Images)
Colin Montgomerie and Bernhard Langer have plenty to do over the weekend as Michael Allen established a commanding lead at the Senior US Open Championship.
American Allen, the 2009 Senior US PGA Champion, shot a brilliant second round 63 at Omaha Country Club in Nebraska to open up a five shot advantage on ten under par.
His compatriots Rocco Mediate and Jeff Sluman are the nearest challengers in an all-American top ten.
Scotland’s Montgomerie, making his Senior Major debut after turning 50 last month, had started well with a one under 69 leaving him just two behind after the opening round.
But the eight-time European Number One had six bogeys and three birdies in a second round 73 to slip to two over and 12 off the pace.
His former Ryder Cup partner Langer was also two over in a share of 25th after carding a 74 on day two.
Meanwhile England’s Roger Chapman will not be able to defend his title over the weekend after a 76 saw him miss the cut on ten over.