[5] Hamman and Bobby Wolff played as partners for nearly three decades on teams that challenged for major trophies in North America and often for world championships.

For the last they were members of Nick Nickell's professional team, where Hamman remained a fixture through the current two-year cycle[a] and won three more Bermuda Bowls in partnership with Paul Soloway and Zia Mahmood.

[8] Justin was a silver medalist in the 2011 Bermuda Bowl[9] and is the son of Hemant Lall, Hamman's partner in 2007.

Bhatt also quoted Bob Hamman in his TED talk "Bridge-A Game for Life[13]" Hamman first qualified for a world championship in the open category by winning the American Contract Bridge League international trials in 1963, for the 1964 World Team Olympiad.

[15] Following the retirement of Italy's Blue team, they won the 1970 Bermuda Bowl as North America representative and repeated in 1971 as defending champion.

Probably his most popular and emotional win, other than the 1970 Bermuda Bowl, was the annual Vanderbilt Trophy, the oldest open teams event in North America, in 2000.