After losing at Schalke last time out Gladbach had to bounce back and after going behind early to Mainz, it was Plea who stepped up to turn the match around.
Both of his finishes from close range were utterly clinical and composed, but his all-round play was excellent, too, creating two big chances for team-mates and proving to be the main man in attack for Gladbach this campaign.
After bursting onto the scene Havertz has had a difficult six months this season, but he is beginning to find some form, as have Leverkusen.
After playing his part in battering Paderborn last week, was again inspired as Fortuna Dusseldorf were swept aside in a superb attacking display. Aside from his excellent goal he also completed three dribbles and created two big chances to team-mates that weren't created. With the Euros on the horizon, Havertz is edging himself back into German contention.
He may be 30 now and have the pressure of Erling Haaland wanting to start in attack for Dortmund, but Reus still has plenty in his locker as shown in his display in the destruction of Koln. He provided a pre-assist to Sancho then Raphael Guerreiro for the opening goal, the broke a weak offside trap to make it two not long after.
After he fed Sancho to last in the third it was effectively game over and Reus had done his job. He wants to be the elder statesmen in one of the most exciting young attacks in Europe.
Sancho was Reus' right hand man as Koln had absolutely no answer to the dynamic duo. Even before Haaland's second incredible cameo in a week, coming off the bench to net twice, Sancho had tormented the opposition defence.
His slide-rule pass across the area gave Guerriero a simple task to slot home, then after being played in by Reus he steadied himself to lash high into the net. Sancho's numbers for goals and assists this season continue to be of the highest quality.
Union Berlin were totally outplayed by visitors Augsburg on Saturday and the main difference maker in the scoreline was goalkeeper Gikiewicz.
Augsburg has 24 shots in the contest, including seven on target, all of which were repelled by the veteran 33-year-old, who gave his side the platform to win 2-0 from their only three shots on target.
ROUND TO FORGET
And on the wrong end of the result, Markus Schubert (4.7) had very little to do other than collect the ball from the back of the net in a thumping 5-0 loss.