On a standout day for the Premier League’s underdogs and English managers, Manchester City, Arsenal, Chelsea and Tottenham all dropped points Saturday. Pep Guardiola’s Manchester City was held 2-2 by Roy Hodgson’s Crystal Palace, further boosting Liverpool’s title hopes, after Jose Mourinho’s Tottenham drew 0-0 with Nigel Pearson’s Watford. City’s draw means Liverpool can extend…