Free-agent closer Grant Balfour, who set an A's team record for consecutive saves last season, is attracting notice from several deep-pocketed potential contenders, including the Tigers and Yankees, according to a major-league source. Other interested teams include the Rockies, Angels and Balfour's former club, Tampa Bay. The A's, who are interested in starting pitching depth in the event they cannot re-sign Bartolo Colon, have inquired about several free agents, including, according to the Atlanta Journal-Constitution, onetime A's Big Three member Tim Hudson. Hudson, however, is expected to return to the Braves.