The Tampa Bay Rays are off to a fantastic start to the season, but there are still some areas that they can improve.  With one of the best records in the American League , the Rays have been playing some excellent baseball and have proven to be one of the top teams in the league. Tampa Bay has been able to exceed expectations, and they are showing no signs of slowing down .  As winners of nine of their last 10 games, the Rays have been keeping pace with the New York Yankees in the division. Tampa Bay might be winning a lot of games, but they do have a couple of notable issues. One that has been a hot topic is the performance of Cedric Mullins in center field.…