Not long ago, a certain American president warned us that we would get tired of “winning.” Well, that hasn’t happened, and Lydia Blakeley decided this is the perfect moment to stick her paintbrush in the eye of an endlessly entertaining trope: that everybody wants to be number one. “Winners,” her new show at Niru Ratnam, charts the foibles of our quest to be best. Her paintings are efficient and earnest in their execution, with just the right dash of sensuality. As you’re won over by the cute — and champion pedigreed — puppies, LA poolscapes, and stock-photo smiles, you barely notice that Blakeley is popping the hood of our “perfect” success stories. And she points out, with an expert mechanic’s oil-stained finger, everything that’s wrong down there.