user: ### NOW ANSWER:
Question: Who were the semifinalists in the tournament where Mats Wilander 7-6, 6-3 was declared the champion?
Columns: ['Week of', 'Tournament', 'Champion', 'Runner-up', 'Semifinalists', 'Quarterfinalists']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['6 August', 'Cleveland , Ohio, USA Hard', 'Terry Moor 3-6, 7-6, 6-2', 'Marty Davis', 'Matt Mitchell Jeff Klaparda', 'David Dowlen David Pate Greg Holmes Mike De Palmer']
SQL:

assistant: SELECT "Semifinalists" FROM "Table" WHERE "Champion" = 'Mats Wilander 7-6, 6-3';