 Complete the following phrase:  The Division Series was implemented in 1981  for that season only  as a result of a midseason strike with first-place teams before the strike taking on the first-place teams after. In 1994, Major League Baseball decided to implement the Division Series permanently, because it was restructuring each league into three divisions. The new division series had a somewhat different format than the one-off 1981 tournament. Additionally, the implementation of this decision, however, was delayed a year, until 1995, due to the 19941995 players strike. Previously, because of a players strike in 1981, a split-season format forced a divisional playoff series, in which the Montreal Expos won the Eastern Division series over the Philadelphia Phillies three games to two while the Los Angeles Dodgers beat the Houston Astros three games to two in the Western Division. The team with the best overall record in the major leagues, the Cincinnati Reds, failed to win their division in either half of that season and were controversially excluded, as were the St. Louis Cardinals, who finished with the NLs second-best record. The Atlanta Braves have currently played in the most NL division series with thirteen appearances. The St. Louis Cardinals have currently won the most NL division series, winning ten of the thirteen series in which they have played. The Pittsburgh Pirates who finished with a losing record from 1993 to 2012 were the last team to make their first appearance in the NL division series, making their debut in 2013 after winning the 