Jordan's Heinz-Harald Frentzen has pulled out of the Canadian Grand Prix in Montreal following an accident in first practice yesterday. The German has withdrawn after suffering with headaches and dizziness. He will be replaced by test driver Ricardo Zonta, who took part in penultimate practice this morning. Frentzen spun into a tyre wall during yesterday's session after picking up dirt on his final run. This accident has come just two weeks after a heavy crash in Monaco.

The 34-year-old will head home to Monaco this afternoon to undergo tests, although he said that he was hopeful of returning in time for the European Grand Prix at the Nurburgring in Germany in two week's time.

"I'm disappointed not to be driving in the race this weekend but wish the team and Ricardo all the best and look forward to being back in the driving seat at Nurburgring," said Frentzen.

Brazilian driver Zonta, who joined Jordan as a reserve and test driver after two years in Formula One with British American Racing, admitted he was excited and nervous at returning to race action. "I am sure it is a big disappointment for Heinz that he will not race," said Zonta.

"I really do hope to do a good job for him and for the Jordan team. In many ways this is tougher than competing in your debut grand prix, but I must say I am excited about getting into the car to race again," said Zonta.

Silverstone-based Jordan has not yet decided whether Frentzen will take part in the test session on the Northamptonshire track next week. The team was allowed to substitute Frentzen with Zonta under F1's Sporting Code after applying to the race stewards.

Filed by Greg McKevitt