ugh i cant stand weekly leagues. i played in one last year and even though i did go far i wouldnt do it again. you cant make any substitutions for that entire week after monday. i need control of my team at all times throughout the week.
To answer your question, i would start Lowrie. He hits for better average, hes younger and he has a better cast around him in boston which means ample RBI chances. I also have him on my team, but thats just me. Hope everything goes well.