Taking outs intentionally.
Walking players to get to a run rule.
Batter calling "deep" while a pitch is in the air.
Fake tying your shoe to delay a rally.
Pitchers walking to 2nd base when a batter steps out of the box during an at bat.
Faking an injury to forfeit a game.
Splitting points instead of playing the finals. You all want the "if" game kept in the rules but then no one wants to play it...sigh
What else am I forgetting?