Officers were initially called to the 100-block of 33rd Street West on the evening of April 1.
A 56-year-old man told police he was robbed after talking with a male suspect while playing VLTs.
The suspect allegedly threatened the man with a knife in the bathroom before stealing his wallet and fleeing the bar. No injuries were reported.
A 33-year-old man was arrested by members of the general investigations section at an apartment building in the 800-block of Confederation Drive on Tuesday. He is facing a robbery charge.
Police are still trying to locate a second suspect believed to be involved in the robbery.
Anyone with information is asked to contact Saskatoon police at 306-975-8300 or Crime Stoppers at 1-800-222-8477.
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