Jerzy Janowicz made a losing return to competitive tennis as he was beaten 4-6 7-6 (7-5) 6-4 by Brian Baker in the opening round of the Heineken Open in Auckland.
The Polish fifth seed was playing in his first tournament since his memorable run to the final of the Paris Masters last November and turned in an erratic display.
Although he showed glimpses of the form which saw him defeat five top 20 players in Paris, he also committed 51 unforced errors and 10 double faults
After the pair split the first two sets Baker took a 5-1 lead in the third only to see Janowicz mount a comeback, but the deficit was too large to overturn.
"It seemed like he flicked a switch.I don't know how many points he won in a row but it seemed like about 15. Luckily I was able to close it out at the end," Baker said.
Elsewhere in the first round, last year's runner-up Olivier Rochus defeated Albert Ramos 6-2 5-7 6-2 in windy conditions which he described as the toughest he had ever played in.
Rochus' fellow Belgian Xavier Malisse battled his way past Slovak seventh seed Martin Klizan to record a 7-6 (7-4) 3-6 6-3 win.
David Goffin, the third Belgian on centre court on Monday, could not complete a hat-trick for his country as he was beaten 7-6 (7-5) 6-2 by No 8 seed Thomaz Bellucci of Brazil.