Northern Ireland&aposs Graeme McDowell has claimed the RBC Heritage in a playoff, as Australia&aposs Marc Leishman registered another top 10 finish in South Carolina. On a blustery day at the Harbour Town Golf Links at Hilton Head, McDowell&aposs two-under 69 was enough to draw him level with Webb Simpson (even par) on nine under overall. McDowell managed to par the first playoff hole, while Simpson missed a six-footer for par to force another additional hole. Co-incidentally, both players were aiming for their first PGA Tour title since their respective US Open triumphs – McDowell looking to break a three-year drought, while Simpson is only 10 months into a dry spell from his breakthrough last year. Earlier on 18, Simpson had a 22-footer to win it outright but just pushed it beyond the cup before encountering a short putt to take it to a playoff. The pair had overtaken third-round leader Charley Hoffman, who still had the ascendancy at the midway point of his round – but three back-nine bogeys plus a double bogey on 14 saw him slip to a tie for sixth on five under. England&aposs Luke Donald completed a solid week with a two-under 69 to finish on seven under, tied with American Kevin Streelman. Jerry Kelly, another local, was outright fifth, one stroke ahead of Hoffman and fellow Americans Chris Stroud and Russell Henley. Leishman had his worst round of the week – a one-over 72 – but still managed a top-10 finish, as he was tied for ninth on three-under overall. That comes off the back of a stunning performance to finish tied for fourth at last week&aposs Masters. Level with Leishman were South African pair Trevor Immelman and Rory Sabbatini, Americans Mark Wilson, Richard H Lee, Jordan Spieth, Billy Horschel, Colombia&aposs Camilo Villegas and Zimbabwean Brendon de Jonge. Defending champion Carl Pettersson of Sweden finished tied for 35th on one over, while world number five Brandt Snedeker failed to turn around his poor week, finishing with a three-over 74 to be five over and tied for 59th. Of the other Australians to make the halfway cut, Jason Day and Matt Jones finished tied for 30th at level par, while Stuart Appleby (+1), Aaron Baddeley (+2) and Cameron Percy (+4) were further adrift.