The 28-year-old rallied from a set down to win the next two when rain interrupted the match. The Indian, however, returned to complete the job as he emerged 4-6, 6-1, 6-2, 4-6, 6-4 victories in the match which lasted three hours and 11 minutes at Flushing Meadows last night.
The world number 114 Indian will next take on Italian Andrea Seppi, ranked 20th, in the second round. Seppi beat Belgian veteran Xavier Malisse 6-3, 3-6, 7-5, 7-5 in another men's singles match.
Facing Lukas for the first time, Somdev tried to curb his unforced errors and rode on his better net play and breakpoint coversation rate to surpass the world number 84 Slovak.
Somdev won 93 percent of the net points compared to Lukas's 63 percent and also converted eight of the 12 break points that came his way.
He also committed just 36 unforced errors, while Slovak had double the number of unforced errors (73) in the match.
The Indian, who was laid low for more than a year after suffering a shoulder injury, won more than 50 percent of points when serving at 30-30 or Deuce.
However, Lukas was way ahead when it came to hitting aces and winners. The Slovak hit 47 winners and 11 aces, compared to Somdev's 30 and 5 respectively.


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