You have to qualify for the Playoffs first... That's Obvious...
Once in the playoffs anything can happen but I don't know if Random is the right word. It's a fresh start and you gotta play ball. Season Records going into the playoffs only matter for seeding purposes but they don't carry over to the playoffs.
In 2001... The Seattle Mariners finished 116-46... Led By Freddie Garcia... Jamie Moyer and Aaron Sele on the Mound. It's the best baseball season (record wise) in the somewhat modern day.
During the course of that incredible Mariners 116-46 Season:
From April 29th to May 8th... The Mariners went 3-5
From May 18th to May 22nd... The Mariners went 1-3
From June 17th to June 28th... The Mariners went 4-7
From July 4th to July 7th... The Mariners went 1-3
From August 16th to August 20th... The Mariners went 2-3
From August 26th to August 31st... The Mariners went 2-3
From September 20 to September 23... The Team went 0-4
7 stretches of games that would have knocked them out of the playoffs at that time if it were the playoffs.
BTW... In the actual playoffs in 2001... The Mariners 116-46 record during the regular season... Did not reach the World Series... They just got past the Indians 3 games to 2 which included a 17 to 2 loss to the Indians before being knocked out by the Yankees 4 games to 1 in the ALCS
The Yankees lost to the D-Backs.
in 2012... The Minnesota Twins finished with a record of 66 and 96.
From May 28th to June 12th... The Twins went 10-3
A winning streak that was long enough to put the team in the World Series if the World Series was happening at that time. From July 27 to
August 7... The Twins were 9-3. Which would have also gotten them to the World Series.
Yes I know... The Opponents for the Twins were not World Series caliber for all of those games... But they were not World Series Caliber teams that the Mariners lost to during their down periods in 2001 either.
The point of it all... Baseball is a streaky game... Once the Playoff starts... It's a clean slate and the 1st team to 11 wins... Gets the title. Your regular season record doesn't apply to anyone anymore.
Who is playing the best baseball at that moment will win. It ain't so much random... It's who's hot... But you gotta get in... so... getting into the playoffs is always going to be the most important goal.
I just picked the 2001 Mariners because they had the best record and I picked the 2012 Twins because we know them so well.
Pick any year... Any team... And you will find stretches where anybody was hot enough to win it and cold enough to lose it.