Improved DH rule

For many years, American League baseball teams have played with a rule which allows a team to have a "designated hitter" bat for the pitcher. While this rule does have a few good features (it helps protect pitchers from injury, and allows some players to have longer careers than they otherwise would) it removes some essential aspects of baseball strategy. In a non-DH game, a team whose pitcher comes up to bat must decide whether to let him bat (and be allowed to pitch) or pull him out for a pinch-hitter (who would then be replaced by a new pitcher at the start of the next half-inning). The DH rule eliminates these strategic aspects by allowing teams to make pitching or batting changes independently of each other.

To retain some of the DH's advantages while restoring some of the strategy aspects it loses, I would propose that teams be allowed to select a designated hitter BUT require that pulling either the pitcher or DH out of the game would require pulling both and replacing them with either one or two new players. This would thus require team owners to make strategic decisions and commitments.

For example, suppose a team's pitcher is doing very badly with none out, and there are five people remaining in the batting order before the pitcher/DH. Pulling the pitcher (and DH) is a no-brainer, but a team would have to decide who (if anyone) to put in as DH. If a team puts its best player in as DH, the team would have to hope the pitcher is good for two full innings or else it would 'lose' that DH without him having batted. On the other hand, if no DH is put in and the team gets three hits in its next time at-bat, the team would be confronted with the need to either pull the pitcher (who may have been pitching fine) or accept the risk of him being put out (which, if three are on base and two are out, could be costly).

I would expect that if this rule were in place, teams would usually put a DH in with their starting pitcher, but usually not with relievers. There would be some exceptions, however, which could serve to make the game more interesting.