Josh Donaldson of the Blue Jays wins Players Choice top player award, though Cubs pitcher Jake Arrieta is Box-Toppers Player of the Year.
Read MoreMets' Matt Harvey is Box-Toppers Most Improved Player in 2015
Coming back from injury, Matt Harvey had the biggest gain in Box-Toppers points from 2014 to 2015. Rangers' Prince Fielder had big comeback year in AL, but 2 AL players had bigger gains from 2014 to 2015.
Read MoreA look at Box-Toppers' top 100 players for 2015
Jake Arrieta of the Cubs tops Box-Toppers player rankings in 2015. The World Champion Kansas City Royals have the most representatives among the top 100 players—seven.
Read MoreSan Francisco Giants, hottest team of the week, rise to top Box-Toppers team rankings
The San Francisco Giants, the hottest team of the past week, have risen to the top of Box-Toppers team power rankings.
Giants players have accumulated 31.0 Box-Toppers points this season, including 7.0 this past week—more than any other team. They rise from fifth place to first, edging past last week’s top team, the Colorado Rockies (30.8 Box-Toppers points).
Top 10 teams
Here are Box-Toppers' Top 10 teams, through the games of Thursday, May 15. The column BTP shows the number of Box-Toppers points players on the team have accumulated so far this season. The column BTP/wk shows have many points teams have accumulated during the past week.The Giants are led by pitcher Madison Bumgarner (5.5 Box-Toppers points—ranked 6th among NL pitchers) and left fielder Michael Morse (4.0 Box-Toppers points—ranked 6th among NL batters).
The Giants also have the best winning percentage of any NL team (.643).
The Rockies fell to second overall after a lackluster week in which they picked up only 1.5 Box-Toppers points.
The top American League team for the fifth straight week is the Oakland Athletics. With 30.4 Box-Toppers points, they are ranked third overall, the same spot as last week.
The Athletics are led by pitchers Scott Kazmir and Jesse Chavez, both of whom have 5.7 Box-Toppers points each. Kazmir is ranked fourth and Chavez fifth among AL pitchers in Box-Toppers points.
The Detroit Tigers have the overall best winning percentage in baseball, .667. They rank eighth in Box-Toppers points with 26.7, down from seventh place a week ago.
Last week’s hottest team, the Miami Marlins, was this week’s coldest team. Last week, they picked up 8.5 Box-Toppers points but this week they picked up the fewest points of any team—1.0. With 29.9 Box-Toppers points for the season, they fell from second to fourth overall. Their bad week was compounded by the news that pitcher Jose Fernandez would be lost for the season, recovering from Tommy John surgery. Fernandez has more Box-Toppers points than any Marlins player, 7.0—nearly one-fourth of the team’s total—and ranks fifth among all players this season.
Box-Toppers tracks who most helps their team win the most games. Using standard box score statistics, Box-Toppers uses a simple formula to determine a Player of the Game for each Major League Baseball game played. That player is the person who contributed most to his team’s win. Players earn Box-Toppers points for being named Player of the Game and can earn bonus points for being Player of the Day or top player or batter in their league for the day.