For his years in Toronto, pitching on a series of mediocre Blue Jays teams, Roy Halladay was a virtual baseball god, arguably the most revered pro sports figure in the city. Now, after a difficult 2012 season and struggling at training camp, it seems he has fallen from Olympus. Halladay’s awful spring ended on Thursday against his old team, the Jays, in Clearwater, Fla. He threw 96 pitches in just 4 1/3 innings, allowing eight hits and three walks. His command was off and the results were painful to watch for anyone who saw him in his prime. A Halladay rebound is the key to the Philadelphia Phillies’ success. No longer the power they were for so long, they have an outside chance this year. They know what they will get out of fellow pitchers Cole Hamels and Cliff Lee. The rest will be up to Roy. His situation in Philadelphia is similar to the one when he left Toronto: the fate of a team on the margin rests once again on his now-aging arm and abilities.