The number of former Iowa football players with contracts in the Canadian Football League has doubled this month.

Four Hawkeyes are on rosters of teams north of the border.

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Defensive lineman Ken Iwebema joined former Iowa quarterback Drew Tate this week on the roster at Calgary, while receiver Derrell Johnson-Koulianos, left, signed last week with Montreal. Former Hawkeyes defensive back Jovon Johnson is under contract with Winnipeg.