Horse racing tips: Three outsiders who can smash the bookies including one starting to hit top form

SUN Racing's value picks for Wednesday are below. Back a horse by clicking their odds. LONGSHOT WHITCOMBE ROCKSTAR (8.30 Kempton) He ran his best race for a while when just over two lengths off the pace at Wolverhampton last time out. EACH-WAY THIEF WIND SUMMER (6.00 Kempton) He makes his handicap debut off a fair...