Hi, who do you think were the most significant underachievers as far as the number of slams are considered ? i am not looking at players like rios, mecir, leconte etc. who underachieved by not winning a slam. rather, i'm looking at players who won slams, but who could've won quite a few more, if they had the dedication that some of their peers had. i'm primarily considering multiple slam winners, and my main picks are these two: mcenroe - marriage to tatum in 1984, followed by his own lack of work ethics, drugs etc. prevented him from winning at least 3-4 slams in the 1985-1987 period. his 1992 AO match against becker, as his matches in the senior tour against much younger opposition, show that he could've held his own even against the power players who followed him, like becker, lendl, edberg etc. becker - significantly underachieved. lost the plot mentally post-1989. after his 1989 USO victory, his demolition of edberg in the 1989 wim F and davis cup, everyone thought he would be able to build on that. sadly, 1990 saw a very pale version of becker - a becker who no longer had the same fire in his belly. wasn't until 1995 until he finally recovered his zest for the game. his epic matches against sampras and agassi in 1995-1996, and the way he beat rusedski, kafelnikov, and chang in the 1996 AO gave a brief glimpse of what he could've been IF he had discovered the same zeal just 3 yrs earlier. your picks ?