Jensen’s Disappearance Causes Concern : Tennis: Player docked for verbal abuse of umpire, failure to complete match, unsportsmanlike conduct.

Murphy Jensen, the quieter half of a colorful men’s doubles team of brothers, failed to show up for a mixed doubles match with Brenda Schultz-McCarthy Monday and had not turned up by midnight.

Jensen and Schultz-McCarthy were scheduled to play Kelly Jones and Katrina Adams, but when the singles match on Court 3 finished sooner than anticipated and the mixed doubles teams were called to the court, Jensen was not there. He and his partner were defaulted and he was fined $1,000.

Schultz-McCarthy said she had practiced with Jensen earlier in the day and at first speculated that he had been watching her singles match, left to warm up at some nearby courts and, finding them full, left for another practice site.

Later, however, friends and relatives grew concerned.

“It’s actually kind of frightening,” said Jensen’s brother, Luke. “All of his rackets are there, his plane tickets.”

According to the Associated Press, Wimbledon security officials said they had had no success in locating Jensen, and a check of local hospitals revealed no record of the 26-year-old American.

The BBC told Wimbledon it would broadcast a message, asking Jensen to call his family if he was listening.

The Jensen brothers, of Ludington, Mich., are the most popular men’s doubles team on the tour, noted for their flamboyant clothes and court behavior. They won the French Open doubles title in 1993.