What makes a winning Major League Baseball team?

One opinion believes that good pitching and good defense will make a winning Major League Baseball team.

One opinion believes a Number 1 Starting Pitchers, a good selection of great Relievers in the Bullpen, solid Number 2 and 3 Starting Pitchers, strong infield defense, speedy Outfielders and a good offense that features the leadoff and the Number 2 hitter having speed and the hitters batting in the third through and including 6 spots will make a winning team.

Another opinion believes teamwork is the essential ingredient to making a winning Major League Baseball team.