 The 2010 series allowed each team to make use of a 19 @-@ man active roster . Exceptions were made in two cases that allowed teams ' active rosters to expand to 21 players , both times for the same reason . Two games during the season had to be postponed because of poor weather . Both games involved teams meeting for the first time during the season ; make @-@ up games were scheduled at the start of the return series between the teams , and this resulted in two four @-@ game series . In both cases , the teams had a 19 @-@ man roster for the make @-@ up game , and an expanded 21 @-@ man roster for the originally scheduled series . 
 The 2010 series allowed each team to make use of a 19 @-@ man active roster . Exceptions <a href='uninflect' title='1'><mark>were</mark></a> made in two cases <a href='null_relcl' title='2'><mark>that</mark></a>allowed teams <a href='null_genetive' title='3'><mark>'</mark></a>active rosters to expand to 21 players , both times for the same reason . Two games during the season had to be postponed because of poor weather . Both games involved teams meeting for the first time during the season ; make @-@ up games <a href='uninflect' title='4'><mark>were</mark></a> scheduled at the start of the return series between the teams , and this resulted in two four @-@ game series . In both cases , the teams had a 19 @-@ man roster for the make @-@ up game , and an expanded 21 @-@ man roster for the originally scheduled series . 
Da 2010 series allowed each team to make use of a 19 @-@ man active roster . Exceptions was made in two cases allowed teams  active rosters to expand to 21 players , both times fir tdasame reason . 2 games during thdaeason had to b postponed because of poor weather . Both games involved teams meeting for the first time during thedaason ; make @-@ up games was scheduled at the dart of the return series between the tdas , and this resulted in tw2 @-@ game series . In both cases , the teda had a 19 @-@ man roster for the makda-@ up game , and an expanded 21 @-@ man roster fir the origdally scheduled series .