Topic: Marco Chiudinelli

Marco Chiudinelli (born September 10, 1981 in Basel, Switzerland) is a male tennis player from Switzerland. He turned pro in 2000. He has competed for the Switzerland Davis Cup team from 2005–2007, and in 2009, winning four matches and losing four. His best performance at a Grand Slam was at the 2006 US Open, where he reached the third round. He later equalled this feat in the 2009 US Open.

At the 2006 US Open as a qualifier, he defeated Feliciano Lopez 3-6, 6-3, 4-6, 6-4, 6-3 in the second round. He then fell to 25th seed Richard Gasquet 7-6(2), 6-3, 2-6, 7-6(2).

At the 2009 US Open as a qualifier once more, he reached the third round. He defeated Potito Starace 7-6(3), 7-6(2), 6-0 and then defeated former top ten player Mikhail Youzhny 2-6, 7-6(4), 6-4, 6-3. He lost to 8th seed Nikolay Davydenko in close straight sets 6-4, 7-5, 7-5.