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