Jordan Spieth might have a bit more game but you can sink your short putts just like he does.
When you get close to the hole, like a three feet for the club championship ... well any three foot putt, amateurs tend to get a little "jerky," focusing on mechanics and impact and ... whoops ... right by the hole or not quite there.
To eliminate the problem, don't look at your putter. Focus on the hole. Look where you want the ball to go and the club championship (or Nassau) is all yours!