They don't really need to use Barnes tonight. Gant threw 60 pitches last time, and I wouldn't be surprised if they let him go more (he was a full start through mid-June this season). Garcia, Barraclough, and Minaya should be good to go, and Coulombe and Colomé should be fine too. With a 3-batter minimum and the runner in extra innings, they shouldn't need more than 6 pitchers. But if they wanted, it's not like Garza, Duffey, or Thielbar would necessarily be off-limits for a short appearance either.
Now, those pitchers may stay in a little longer than their effectiveness warrants, and we may eschew playing matchups etc., but that's all part of playing out string.
From today's game recap:
Bullpen Usage Chart
THURS
FRI
SAT
TUE
WED
TOT
Barnes
0
109
0
0
0
109
Minaya
0
16
0
30
0
46
Albers
63
0
0
0
0
63
García
0
0
28
0
0
28
Gant
61
0
0
0
0
61
Garza Jr.
0
0
31
0
24
55
Barraclough
0
46
0
0
4
50
Duffey
0
0
0
19
9
33
Colomé
0
0
0
0
20
0
Coulombe
19
0
0
0
19
19
Thielbar
0
0
0
14
22
23