Name the most challenge cup for damon gray
{'header': ['Player', 'League', 'Scottish Cup', 'League Cup', 'Challenge Cup', 'Total'], 'page_title': '2008–09 Partick Thistle F.C. season', 'section_title': 'Goalscorers', 'caption': 'Goalscorers', 'rows': [['Gary Harkins', '9', '1', '1', '1', '12'], ['Liam Buchanan', '6', '1', '0', '0', '7'], ['Stephen McKeown', '3', '0', '2', '2', '7'], ['Kris Doolan', '5', '0', '0', '0', '5'], ['Ian Maxwell', '3', '0', '1', '0', '4'], ['Scott Chaplain', '2', '1', '1', '0', '4'], ['Damon Gray', '1', '0', '2', '1', '4'], ['Paul Paton', '3', '0', '0', '0', '3'], ['Kevin McKinlay', '2', '0', '0', '0', '2'], ['Simon Donnelly', '1', '0', '0', '1', '2'], ['John Robertson', '1', '0', '0', '0', '1'], ['David Rowson', '1', '0', '0', '0', '1'], ['Lucas Akins', '1', '0', '0', '0', '1'], ['Mark Roberts', '0', '0', '0', '1', '1'], ['Chris Turner', '0', '0', '0', '1', '1']]}