Terry Tibbs
Hall of Fame
Due to the fact he didn't lose a match in the one slam he didn't win due to not playing it would be a 100% record in slams for the season. Add in his other titles at Indian Wells, Miami and Halle and final appearance at Montreal, a US Open title would surely mean that he has had his most successful season at the age of 35/36. For this reason though together with his back problem I dont see him winning it. It would just be too an unreal an accomplishment so is unlikely to happen.