The Chase viewers were left stunned as contestant Jo featured on the ITV game show on Friday night (July 1).During tonight's show, fans of the series - fronted by Bradley Walsh - were introduced to four new contestants hoping to win some cash.Sharon, Dan, Jo and Will joined host Bradley, 61, in the studio ahead of their attempt to beat the Chaser.READ MORE: The Chase fans all saying the same thing after random human body part revelationBut it wasn't the team's knowledge that caught the attention of viewers at home. Instead, fans were left shocked as Jo revealed her age.