Check out the latest Andy Murray Specials with Sky Bet. We have odds on his next grand slam win, number of grand slams won and total career titles. Also, claim. + 65 Bets. Live At, 03 Aug UK. 10/1. Yes. 1/ No. A Grand Slam is a home run hit with all the bases occupied by base runners, thereby scoring 4 runs. Heineken Cup and Six Nations odds now available. letting you access outright betting, Triple Crown and Grand Slam betting markets whenever you want.