The Somerville Yeguas lost to Richards 13-2 and 17-12 in two games last week.The Yeguas fell to 5-13 overall and 4-8 in district play. In game one in Somerville, Richards held a 2-1 lead through four innings and then added 9 runs on the top of the fifth.Somerville scored 1 run each in the bottom of the fourth and fifth innings.Somerville had 9 hits and 15 errors, and Richards had 9 hits and no…