I agree w/ the 1 ER in the box score:

After 1 out, Tag reached on an error. Two hits later, he scores (unearned, he should've been out). Pujols scored on the next hit (earned). Next guy is out, so all scoring after that should be unearned cuz there would've been 3 outs.

This version is easier to read for me:

ST. LOUIS 1ST
-Top of the 1st inning
-T Womack flied out to left.
-S Taguchi safe at first on error by second baseman P Polanco.
-A Pujols singled to center, S Taguchi to second.
-S Rolen singled to shallow center, S Taguchi scored, A Pujols to third.
-E Renteria singled to right center, A Pujols scored, S Rolen to second.
-R Sanders fouled out to second.
-H Luna homered to left, S Rolen and E Renteria scored.
-C McKay flied out to left.

5 runs, 4 hits, 1 error
St. Louis 5, Philadelphia 0