If we look at the Toronto radio ratings for men 25-54, with the usual caveat that the PPM system is a flawed system, although the best we currently have for radio, it seems that The Fan 590 is bleeding out. The station has lost about half of its listeners.
Both The Fan 590 and TSN 1050 are baby guppies in the Toronto radio universe, barely making a ripple. Amongst all people over the age of 12, 590 has a 0.7% share and 1050 has a 0.4% share.