Okay, if the collective brainpower on this site can't come up with a satisfactory explanation, then perhaps we should go to the horse's mouth. I'll write to the ST and ask - will keep people posted on what the reply is.
Just to let you know I wrote to the ST about this and the response was that the two anagram indicators were a mistake and on the question of the 'L' both Mamya and Ginge were right. L=lost is from football league tables in newspapers (despite not being listed in some rather large dictionaries - Collins Eng Dict and Oxford Dict of Eng). The ST would also allow won=W and drawn=D for the same reason. So now we know!