Isner began his professional career in earnest in the summer of 2007. With a world ranking of no. 839, he needed wildcard entries into the main draws of every tournament, even at Futures level.\n', '

He won his first tournament of the summer, the USA F14 Futures, beating the top three seeds along the way. Then, after first-round losses at Challenger level as well as a tournament at ATP level, he beat five top-300 players and three seeds to win the Lexington Challenger in July and improve his ranking to no. 416 after just one month.\n', '

At the following week\'s tournament at the Legg Mason Tennis Classic in Washington, D.C., a late withdrawal freed up a wildcard spot, which was given to Isner at the last minute. Isner took full advantage of his good fortune, recording his first wins over top-100 players. He won third-set tiebreakers on five consecutive days, beating no. 73 Tim Henman, no. 47 Benjamin Becker, no. 189 qualifier Wayne Odesnik, no. 12 Tommy Haas, and no. 54 Gaël Monfils, to reach the final, where he fell to fellow American Andy Roddick. His week raised his ranking to no. 193 in the world after six weeks on the pro tour.\n', '

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