What are the teams that played in a match with the point of winning margin of 38 on April 30, 2009?
point of winning margin of 38 refers to win_margin = 38; on April 30, 2009 refers to match_date = '2009-04-30'; team refers to Team_Name;
SELECT T1.Team_Name FROM Team AS T1 INNER JOIN Match AS T2 ON T1.Team_Id = T2.Team_1 WHERE T2.win_margin = 38 AND match_date = '2009-04-30'