More substitution nonsense

[danielz]

1 L.Boudreau 2-2 HBP b-1 F9
SUBSTITUTE PR- Hal Rhyne
L. Boudreau Injured for 0 more games
1 1 E.Delahanty 2-4 Fly Out (LF) b-0 bpSI 1-2 F9
2 1 J.Foxx 6-7 Strike Out b-0 F9
*** BOTTOM OF INNING 9 ***
SUBSTITUTE 2B- Bullet Joe Rogan
SUBSTITUTE SS- Hal Rhyne
SUBSTITUTE CF- Matty Alou
0

Boudreau is hurt and is replaced by Rhyne, OK
But why does that trigger Rogan moving to 2nd to replace Melillo who is a great defender??????