In his first 12 years as a pro, he found very little success, winning just 7 ATP-level matches and cracking the top-100 for just a few weeks in late 2003, peaking at #96.
In 2007, at the age of 33, Eschauer cracked the top 100 in April and reached #53 in the world in July. He won 7 ATP-level matches in 2007 to match his total from the previous 12 years and won 4 matches at the Dutch Open in July to reach his first ATP final, including a win over Carlos Moya in the quarters. He lost to Steve Darcis, another first-time finalist.
His most notable match was playing Rafael Nadal on Centre Court at Wimbledon in the 2nd round in June 2007. ESPN's Chris Fowler reported during coverage of this event that when searching for a left-handed player to practice against as a warm-up for the left-handed Nadal, Eschauer ended up facing off against John McEnroe. Fowler described Eschauer as coming from a modest background, and stated that he had not received much support from the Tennis Federation.
|Grand Slam (0)|
|Tennis Masters Cup (0)|
|ATP Masters Series (0)|
|ATP Tour (0)|
|No.||Date||Tournament||Surface||Opponent in the final||Score|
|1.||July 19, 1999||Schwaz||Clay||Alexander Peya||7–6 6–3|
|2.||October 2, 2000||Tangiers||Clay||Nicolas Thomann||6–4 6–3|
|3.||October 21, 2002||Seoul||Hard||Igor Kunitsyn||6–2 ret.|
|4.||June 16, 2003||Braunschweig||Clay||Igor Andreev||6–1 7–6|
|5.||August 22, 2005||Geneva||Clay||Damian Patriarca||6–3 6–1|
|6.||March 13, 2006||Caltanissetta||Clay||Victor Crivoi||6–3 2–6 6–2|
|7.||March 20, 2006||Catania||Clay||Pablo Andujar||6–3 6–3|
|8.||April 17, 2006||Chiasso||Clay||Simon Greul||6–1 6–2|
|9.||August 28, 2006||Kranj||Clay||Gorka Fraile||6–1 6–0|
|10.||February 5, 2007||Wrocław||Hard||Tomáš Zíb||5–7 6–4 6–4|
|11.||April 2, 2007||Monza||Clay||Jan Hájek||6–0 3–0 ret.|
|12.||April 9, 2007||Chiasso||Clay||Michael Berrer||6–3 6–2|
|13.||June 11, 2007||Lugano||Clay||Jiří Vaněk||6–4 4–6 7–6|