Career
Donar was a doubles specialist and appeared in only one singles event during his career on the Association of Tennis Professionals Tour, at Mexico City in 1993, where he was defeated in the opening round by Thomas Muster. His best ever singles ranking was 371 in the world. He broke into the top 100 of the doubles rankings in 1992, after winning the tournament in Palermo, with countryman Ola Jonsson.
Earlier that year he was a semi-finalist twice, both times with January Apell, at Kitzbuhel and then Prague.
He partnered Peter Nyborg at Wimbledon, but played beside Jonsson in the other three tournaments. Doubles: (2).
