1954 Cleveland Indians
Record: 111-43-2
Playoffs: Lost World Series 4-0 to New York Giants
Top Batting OPS+: 3B Al Rosen
Top Pitching ERA+: SP Mike Garcia
2001 Arizona Diamondbacks
Regular Season Record: 92-70
Playoffs: Won NLDS 3-2 v St. Louis, Won NLCS 4-1 v. Atlanta, Won World Series 4-3 v. New York Yankees
Top Batting OPS+: LF Luis Gonzales
Top Pitching ERA+: SP Randy Johnson
Result: It was a close series throughout, as the Diamondbacks edged the Indians by 5 games, 83-78. Randy Johnson went 22-7 with a 2.20 ERA for the DBacks, and Curt Schilling went 17-11 with a 3.33 ERA. Reggie Sanders led on offense with 45 HR, while Luis Gonzales hit .325/37 HR. For the losing '54 Indians, their pitching was not great, as there were no pitchers with .500 records, but on offense Larry Doby went .301/48 HR, Bobby Avila went .368/26 HR, and Al Rosen went .316/38 HR. The '01 Diamondbacks will play the winners of the '55 Dodgers and the '85 Royals in Round 2.
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1955 Dodgers
Regular Season: 99-55-1
Postseason: Won World Series 4-3 v. New York Yankees
Top Batting OPS+: CF Duke Snider
Top Pitching ERA+: SP Don Newcombe
1985 Royals
Regular Season: 91-71
Postseason: Won ALCS 4-3 v. Toronto Blue Jays, Won World Series 4-3 v. St. Louis Cardinals
Top Batting OPS+: 3B George Brett
Top Pitching ERA+: SP Charlie Liebrandt
Result: This was an absolute blowout, as the '55 Dodgers crushed the '85 Royals 126-35. The Dodgers clinched in August and continued to roll after that. Don Newcombe led Dodger pitchers with a 19-5 record and a 4.53 ERA. Duke Snider led Dodger hitters with a .387/41 HR clip and Carl Furillo broke the .400 barrier with a .411/31 HR clip. Roy Campanella, Gil Hodges, and Jim Gilliam all hit above .370 as well. The '55 Dodgers had an 18 game winning streak at one point in May, and a 23 game winning streak in June-July.
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1999 Braves
Regular Season: 103-59
Postseason: Won NLDS 3-1 v. Houston, Won NLCS 4-2 v. NY Mets, Lost World Series 4-0 v. NY Yankees
Top Batting OPS+: 3B Chipper Jones
Top Pitching ERA+: SP Kevin Millwood
2015 Mets
Regular Season: 90-72
Postseason: Won NLDS 3-2 v. LA Dodgers, Won NLCS 4-0 v. Chicago Cubs, Lost World Series 4-1 v. Kansas City
Top Batting OPS+: 1B Lucas Duca
Top Pitching ERA+: SP Jacob DeGrom
Result: The Pitching led '99 Braves dominated the 2015 Mets, clinching on August 23rd and winning the series 100-61. The Braves had 4 starters with 13 wins or more, led by Tom Glavines 16-4 2.41 ERA and Greg Maddux's 18-7 3.08 ERA. Ryan Klesko and Andruw Jones each had a .300 avg and 30 HR on offense.
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2005 Houston Astros
Regular Season: 89-73-1
Postseason: Won NLDS 3-1 v. Atlanta, Won NLCS 4-2 v. St. Louis, Lost World Series 4-0 v. Chicago White Sox
Top Batting OPS+: 3B Morgan Ensburg
Top Pitching ERA+: SP Roger Clemens
1997 Florida Marlins
Regular Season: 92-70
Postseason: Won NLDS 3-0 v. SF Giants, Won NLDS 4-2 v. Atlanta Braves, Won WS 4-3 v. Cleveland
Top Batting OPS+: RF Gary Sheffield
Top Pitching ERA+: SP Kevin Brown
Result: The '97 Marlins started off slowly, but steadily improved throughout the season and clinched on September 13th leading 82-71 in the standings. The Astros led by 7 games after April, but the Marlins cut that to 4 games by the end of May, 1 game by the end of June, and by August 1st they were ahead by 6 games. The Marlins ended up winning the series 85-76 and sent the Astros home packing. There were no real standout performers for the Marlins but the '97 Marlins lead in almost all team categories.