In front of 12,217 fans at the Phone Booth, the Washington Mystics claimed a 75-63 win against last year’s league MVP Candace Parker (in her third game back from her much publicized maternity leave) and the visiting Los Angeles Sparks on Saturday — a victory which kicked off a six-game home stretch for Washington the right way. Lindsey Harding got the Mystics rolling in the first quarter with a steal from Parker and a…