Five-time champion Barcelona couldn’t score at all, with star striker Lionel Messi hitting the crossbar and having a late shot saved by standout goalkeeper Ondrej Kolar in 0-0 draw with visiting Slavia Prague.
Barcelona remains top of Group F with eight points and Dortmund is only one behind. But Inter has only four and is facing elimination.
While Messi failed to add to his whopping total of 113 goals in Europe’s top club competition, Salzburg’s 19-year-old rising star Erling Haaland made it seven in four games with an early penalty only for Hirving Lozano to equalize for Napoli just before halftime.
Memphis Depay continued his scoring form as Lyon beat Benfica 3-1 to stay in touch with group rival Leipzig, which tops Group G by two points after winning 2-0 at Zenit St. Petersburg.
Group H is up in the air, with Valencia beating Lille 4-1 to join Ajax and Chelsea on seven points with two rounds remaining.
Chelsea fell behind after two minutes, then trailed 4-1 after 55, yet almost won on a wild night at Stamford Bridge.
Chelsea’s comeback charge was helped by Ajax — last season’s semifinalist — playing the final 20 minutes with nine men after defender Daley Blind and Joel Veltman were sent off in quick succession.
Substitute Reece James made it 4-4 with a 74th-minute equalizer for coach Frank Lampard’s side.
Chelsea striker Tammy Abraham’s own goal gave Ajax a second-minute lead before Jorginho equalized with his first of two penalties.
Quincy Promes put Ajax in…