West Ham United produced a remarkable second-half comeback to rescue a 3-3 draw against Cardiff City in Scott Parker's first match as manager, while Championship leaders Middlesbrough suffered a surprise 2-0 defeat to Wrexham.
Parker was officially appointed as Nuno Espirito Santo's successor just hours before West Ham travelled to Wales, but his managerial debut appeared destined for defeat after Cardiff raced into a commanding three-goal lead before half-time.
However, a spirited second-half response, inspired by captain Jarrod Bowen, saw the Hammers recover to claim a valuable point and remain within touching distance of the Championship's promotion places.
Cardiff made a blistering start as Irish international Jack Moylan delivered an outstanding first-half performance, completing a hat-trick to leave West Ham facing a seemingly impossible task.
Moylan opened the scoring with a spectacular strike before doubling Cardiff's advantage from the penalty spot.
He completed his hat-trick with a well-taken header from a corner, sending the Bluebirds into the break with a commanding 3-0 lead.
For newly appointed manager Parker, it was a difficult introduction to life in the West Ham dugout.
West Ham emerged for the second half with renewed determination, and Bowen played a crucial role in turning the contest around.
The England international created the opportunity for Divine Mukasa to pull a goal back before Arne Engels reduced the deficit further.
Engels' strike marked his first goal for West Ham since completing a high-profile move from Celtic.
With momentum firmly in their favour, the visitors continued to press for an equaliser.
Their persistence paid off eight minutes from time when defender Max Kilman found the net following another assist from Bowen, completing an extraordinary comeback.
Despite both teams pushing for a late winner, the match ended 3-3, leaving Parker with a point from his first game in charge.
West Ham remain eighth in the Championship standings, just five points behind league leaders Middlesbrough.
Elsewhere, Wrexham secured an impressive 2-0 home victory over Middlesbrough, handing the Championship leaders their first league defeat since August.
The Welsh club, owned by Hollywood actors Ryan Reynolds and Rob McElhenney, entered the encounter following a difficult run of results but delivered a much-needed victory.
George Thomason and Ollie Rathbone scored the goals as Wrexham claimed only their second win in six matches.
Middlesbrough struggled to find their attacking rhythm without injured striker Will Lankshear, the Championship's leading goalscorer.
The defeat prevented Boro from extending their advantage at the top of the table, while Wrexham climbed to 16th.
Wolves also capitalised on Middlesbrough's setback, securing a dramatic 2-1 victory away to Bristol City.
Newcastle United loanee Sean Neave emerged as the match-winner, scoring twice in the final 10 minutes to complete a crucial turnaround.
His late double lifted Wolves into second place in the Championship standings, just one point behind Middlesbrough.
The result adds further pressure at the top of the table as the race for automatic promotion intensifies.
The latest round of Championship fixtures delivered significant developments at both ends of the standings.
West Ham's dramatic comeback provided an encouraging start to Parker's tenure, although their defensive struggles in the opening half highlighted areas requiring immediate improvement.
Meanwhile, Middlesbrough's unexpected defeat has tightened the promotion race, with Wolves now firmly challenging for top spot.
For Wrexham, victory over the league leaders represents an important confidence boost as they look to build momentum and move further away from the lower reaches of the table.
With only five points separating West Ham from first place, the battle for promotion remains wide open.