Giants pitcher Matt Cain was betrayed again by Giants hitters today. After pitching yet another unsupported gem, in which he allowed just a walk and three hits in 7 innings — a solo homer accounting for the only run scored by Boston — the Giants lost 1-0. Boxscore; log.

It’s nothing new for the hard-luck kid, who is becoming a legend for brilliant pitching performances that are unsupported by runs scored by his teammates. After the jump, a look at Cain’s season so far, showing how a pitcher with the excellent ERA of 3.15 could be 2-7 in mid-June.

Matt Cain’s pain

       Cain       Giants      Opp.
start  W/L  IP  runs/hits* runs/hits**
------ ---  --- ---------- ---------
Apr  9  L   7     0 / 5      1 / 1
Apr 17  nd  7     3 / 7      0 / 2
Apr 22  W   9     2 / 4      1 / 1
Apr 28  nd  6     4 / 6      1 / 1
May  3  L   3     7 / 11     7 / 8
May  8  L   7     1 / 7      4 / 10
May 13  W   6    15 / 22     1 / 5
May 19  L   6.1   2 / 3      3 / 6
May 25  nd  6.2   3 / 8      2 / 4
May 31  L   7     2 / 3      4 / 11
Jun  5  nd  5.1   3 / 11     3 / 8
Jun 10  L   8     0 / 5      1 / 5
Jun 16  L   7     0 / 4      1 / 5

* Giants runs/hits for the whole game.
** Opponents’ runs/hits against Cain only.
nd = no decision; Giants eventually lost each Cain no decision, meaning he left the game with a lead or a tie and the bullpen lost the game.