Is the appeal valid?

[MT73]

OBR
Battler hits a grand slam home run

Defense change pitcher  and he throws his warm-ups

Now the defense wants to appeal a missed base?

Can he?

[BigBlue4u]

55 minutes ago, MT73 said:

OBR
Battler hits a grand slam home run

Defense change pitcher  and he throws his warm-ups

Now the defense wants to appeal a missed base?

Can he?

Yes.  5.09.  An appeal under this rule musts be made before the next pitch or any play or attempted play. If the violation occurs during a play which ends a half-inning, the appeal must be made before the defensive team leaves the field.