It is unclear how Byrd 's arrival affects outfielders John Mayberry Jr. , who is eligible for salary arbitration , or Darin Ruf .
Amaro said Byrd assumes Byrd will tender John Mayberry Jr. a contract .
It is unclear how Byrd 's arrival affects outfielders John Mayberry Jr. , who is eligible for salary arbitration , or Darin Ruf , although Amaro said he assumes he will tender Mayberry a contract .