In 2007, Kendrick played in all four
Grand Slam tournaments. In January at the
Australian Open, he drew Rafael Nadal in the first round and lost 6–7, 3–6, 2–6, committing six double faults and having a low percentage of second-serve points won (38%). Kendrick subsequently lost in the first round of several tournaments before reaching the third round at the
Sony Ericsson Open in
Key Biscayne, Florida, where he was defeated in straight sets by
Andy Murray. At the
French Open, Kendrick again fell in the first round, losing in four sets to world no. 134
Juan Pablo Brzezicki of
Argentina, again thanks to six double faults and a low percentage of second serve points won (this time, 46%). At the
Queen's Club Championships in June, he reached the second round and won a set against
Novak Djokovic. At Wimbledon, however, he was not able to reach the second round as he had the previous year, losing a five-setter to
Tommy Robredo. He went 1–3 in the
US Open Series, before falling to
Igor Andreev of Russia in the first round of the
US Open itself 6–7, 3–6, 4–6. Again, his second serve was a weakness: he won just 42% of second-serve points and double-faulted five times. While 2007 was largely a lackluster year for Kendrick on the main ATP circuit, he did win three Challenger events:
Dallas,
Calabasas, and
Knoxville. In Calabasas, Kendrick had to defeat two up-and-coming fellow Americans,
John Isner and
Donald Young, in the semifinals and finals, respectively. ==2008==