David Bell put in a match-winning performance as he scored 31 points on his Basketball Champions League debut to help Dinamo Sassari to a 97-88 victory over Szolnoki Olaj.
Dinamo's play-off hopes hang in the balance after five defeats in their opening nine matches - three of those by a single point - but Bell could prove the difference in their bid for a top-four finish in Group E.
Bell - scorer of 18 points on his domestic bow over the weekend - made six of nine attempted three-pointers, including one in a third quarter that saw Dinamo outscore their visitors by 10 points to put decisive daylight between the sides on Tuesday.
Szolnoki Olaj remain bottom with a single victory, while MHP Riesen Ludwigsburg went top following their 87-77 triumph over Stelmet Zielona Gora, although second-placed Besiktas Sompo Japan play their game in hand against Partizan on Wednesday.
Johannes Thiemann converted all 10 of his free throws for a perfect record that inspired new group leaders MHP Riesen Ludwigsburg.
In Group B, Umana Reyer Venezia's 10-match winning run came to an end in emphatic fashion, losing 99-59 to Pinar Karsiyaka.
Juventus Utena are top of Group D after beating Telenet Oostende 81-71, while Nik Slavica chalked up 25 points in Cibona's 87-77 victory over Mega Leks.
ASVEL Lyon-Villeurbanne's 76-69 win against EWE Baskets sent them top of Group C, but Neptunas Klaipeda could regain that position by beating Openjobmetis Varese on Wednesday.
Group A was the busiest of all on Tuesday, with all eight teams in action, and wins for Banvit and AS Monaco over Fraport Skyliners and Helios Suns respectively consolidated their positions in the top two.
CEZ Nymburk and Aris claimed away wins at Ironi Nahariya and Bakken Bears.