By Emily Doak
Almost everyone can name a sports team that always seems to be "in-the-hunt" for the playoffs, or a superstar athlete that has dominated his or her field for decades.
Sometimes fund managers make similar claims about their ETFs' performance by touting their star-ratings, analyst recommendations or sky-high since-inception returns. Even though funds are required by the U.S. Securities and Exchange Commission ((SEC)) to include warnings that past performance is not a guarantee of future success, it's difficult to ignore the performance information displayed prominently in charts and graphs, and, like sports fans,