By Mike McDaniel The designated hitter joins Washington as the universal DH comes into play in the National League. With the inclusion of the universal designated hitter as part of Major League Baseball’s new collective bargaining agreement, there is now a market for several designated hitters to cross over into the National League during the free agent frenzy this month. Nelson Cruz, who has been the DH for the Twins over the last several seasons before spending part of 2021 with the Rays, has agreed to a one-year deal with the Nationals, according to Ken Rosenthal of The Athletic. The $15 mi…