Complex sentence: Lowry is known to not show up when it matters most (such as the playoffs) as he has never made it out of the first round of the playoffs for the past three years, despite being the favoured team to advance.
Split into simpler sentences: Lowry is known to not show up when it matters most (such as the playoffs). Lowry has never advanced out of the first round of the NBA playoffs for the past three years, despite being the favoured team to advance.