The 22nd seed left Paris yesterday and drove eight hours to Borgholzhausen, via Belgium, dealing with three road accidents and torrential rain which made the journey 90 minutes longer than normal - the same length of time his son arrived before he made it to the clinic.
Pavel said: "I was always going to get back to Germany because I somehow knew the baby would be coming yesterday.
"I won't forget this day for the rest of my life and this has been my best French Open, beating Tommy Haas. I don't even feel sorry because I lost this match to Alex."
Britain's David Brewer lost his third-round boys' match against Jo-wilfried Tsonga 6-7, 7-6, 6-2 and then fellow Briton Alex Bogdanovic lost to second seed Richard Gasquet, 6-3, 6-4.
Meanwhile, Bogdanovic, Jamie Delgado and Arvind Parmar have all been given wild cards into the main Stella Artois draw at Queen's Club in Kensington next week.
