Tsumura debuted at the 2003 Pro Tour in Chicago. Over the next two seasons, he qualified for most Pro Tours, but never earned more than the minimum two pro points. The 2005 season saw Tsumura make his breakthrough.
Tsumura began competing at the 2003 Pro Tour in Chicago. Over the next two years, he frequently participated in Pro Tours without achieving significant points. The 2005 season was when Tsumura finally succeeded.