Robert Kendrick was one-and-done Tuesday afternoon as defending champion of the $50,000 Knoxville Challenger tennis tournament.
Kendrick, seeded third and ranked No. 84 in the world, lost to 16-year-old Filip Krajinovic 5-7, 6-4, 6-3 of Serbia in the first round at the University of Tennessee's Goodfriend Tennis Center.
Krajinovic, who lives and trains at the Bollettieri Tennis Academy in Bradenton, Fla., won three qualifying matches over the weekend to reach the main draw.
"I've never played him before and quite frankly wasn't even going to play (the Knoxville Challenger)," Kendrick said.
Kendrick said he decided to play Monday and made the trip from Champaign, Ill., where he played last week's Challenger event and lost in the second round to Taylor Dent.
Asked why he almost withdrew from Knoxville, Kendrick said, "Body's beat up, a long year."
Krajinovic, ranked No. 901, will make a big jump after his biggest pro victory.
"He's top 100 in the world," Krajinovic said. "It's something I'm very proud of. I hope I'm going to keep winning."
Krajinovic had a small-but-vocal group cheering for him during the match against Kendrick.
"They are some students from Serbia in school here (at UT), so they come to watch," Krajinovic said. "I want to say thanks to them."
Second-seeded Bobby Reynolds, ranked No. 83 in the world, beat Michael McClune 7-5, 6-3 in his opening match Tuesday night.
Top-seeded Vincent Spadea played India's Somdev Devvarman - the 2008 NCAA singles champion while playing for Virginia - in a late match Tuesday night.
Fifth-seeded Kevin Anderson, who won last week's Champaign-Urbana Challenger, advanced with a 6-4, 6-2 victory over Canada's Milan Pokrajac in the first round.
Anderson, ranked No. 120 in the world, turned pro in September 2007 after his junior year at Illinois. Last week was a homecoming and couldn't have come at a better time.
"It was great," he said. "I think the second half of the year there were some tough times, a lot of ways not getting the results I wanted, so last week was a great week for me.
"I felt it was a lot of hard work going into that. I was playing at home, I went to the university there, so I had all my friends supporting me. It was definitely a great week."
Anderson reached the final of the ATP Tour event in Las Vegas in the summer before losing to Sam Querry in three sets.
"It was definitely a great week for me to prove I could beat some of the best players in the world," Anderson said.
The 6-foot-8, 195-pound South African faces UT sophomore John-Patrick Smith in today's second round. The match should start about 4:30 p.m.