Hall of Fame second baseman Joe Morgan has written a letter to baseball writers, urging them not to vote for players that have been tied to performance-enhancing drugs. Morgan didn't mention players by name, but pitcher Roger Clemens (54.1 percent of the vote last year) and outfielder Barry Bonds (53.8 percent) have been moving up in vote percentage each year, getting closer to the 75 percent needed to be enshrined. When Clemens and Bonds were first on the ballot in 2013, they were at 37...