2009-to date
Club Coach

2013
Coach of Sander Groen (NED)

2012
Personal Coach of Stefan Vinti (ROU), ITF Juniors ranking of No. 61 (at Wimbledon Juniors 2012)

Greatest successes as player:

2008
Runner-up with Oscar Sabate-Bretos, 10000$ ITF Futures, Römerberg (GER)

2007
Career High ATP Doubles Ranking of No. 653
Semifinalist with Max Raditschnigg, 15000$ ITF Futures, Kempten (GER)

2006
Semifinalist with Till Marks, 25000$+H ATP Challenger, Oberstaufen (GER)

At the age of 18 player in 2nd German Division (2. Bundesliga) with team members Andrei Medvedev, Andrei Cherkasov, Udo Riglewski and Sander Groen

2020
AATC Advanced Tennis Coach
PTCA Accredited Professional, NR – National Registration-Germany

2019
GPTCA B-Level International Coach

2018
Tennis Mental Coach

2013
USTA A Licence

2012
GPTCA C-Level International Coach, Munich, Germany 

2010
USTA B-Licence

2009
Sport Trainer in Tennis

Marko Zelch

Email: zelch.sport@web.de