Andrew Gumperz is a part-time bridge professional based in the SF bay area. He has numerous regional victories, but his proudest bridge accomplishment was upsetting the CAYNE team at the 2009 Spingold in Washington DC. In his spare time, Andrew enjoys musical theater, especially when his daughter is performing.
1-loser suit, extras. no side 4-card suit.
Upvoted for the use of "scintilla."
Hearts was bid on your left.
♠7 at matchpoints. Low heart at IMPs.
You could try 2♠ as a PJO, but with the opener on your right your game chances are not too bad. Game is a favorite opposite: ♠Qxx, ♥KJx, ♦Kxx, ♣xxxx which has no wastage, but is not too much to ask.
2♠ if it is agreed to be an IJO.
I will bid 4♠ Over3♥. I expect a heart correction from LHO. My double of 3♣ may help partner if the enemy compete to 5♥ over my 4♠.
Partner is big and balanced. Experience suggests it pays to let him show his values before you bid. Otherwise, partner tends to get overboard.