yes, its possible, but different ratings have different amounts they can go up. per and lp are probably the only two that will actually go up 70 or 80, and its fairly rare, but it happens. his level of work ethic largely depends on how much else he has to practice, how much playing time he gets, starts, etc... if you just want a simple rule of thumb, its probably relatively fair to say, if a guy starts at 40 work ethic or higher, you will probably at least get within a few points or so of his caps.