RICHMOND – The Spartans’ defense got stingy to start this week of varsity softball. After yielding 38 runs last week in their first two games, both losses, the Spartans posted back-to-back shutouts Monday and Tuesday. On Monday, they cruised to a 15-0 Missouri River Valley Conference East Division road win in five innings over Lexington. They then ran away from the Tina-Avalon/Norborne/Southwest of Livingston County co-op 10-0 Tuesday, also in five innings, at Southview Park. “We’re just getting better every time we step out on the field,” Richmond coach Staci Maddux said. “We were a little shaky the first couple games. We played some tough teams and the girls were a little nervous, I think. But it seems like they’re really starting to settle in.” Jaedyn Lopez pitched both shutouts. She struck out five, allowed two hits and walked one against Lexington. On Tuesday, Lopez scattered five hits, struck out three and walked two. “She pitched well at Lexington yesterday and she pitched…