In Group D, Serbia remain in top spot as they came from a goal down to clinch a 1-1 draw with Wales at the Red Star Stadium.
The visitors took a 1-0 lead into the half-time break courtesy of Aaron Ramsey’s 35th-minute penalty, but Aleksandar Mitrovic rescued a point for the Eagles 17 minutes from time.
Republic of Ireland missed out on the chance to move into pole position after they battled back to earn a 1-1 draw against Austria at the Aviva Stadium.
Das Team looked set to come away with all three points in Dublin after Martin Hinteregger opened the scoring in the 31st minute, but the hosts eventually hit back through Jonathan Walters five minutes from time.
The Boys in Green are tied with Serbia on 12 points, but occupy second place on goal difference, four points ahead of the Welsh in third.
Moldova squandered a two-goal lead as Georgia fought back to secure a 2-2 draw at the Zimbru Stadium, which kept them off the foot of the group.
First-half goals from Radu Ginsari (15′) and Aleksandr Dedov (36′) gave the hosts a comfortable lead at the interval, but Giorgi Merebashvili pulled one back on 65 minutes before Valeri Qazaishvili restored parity five minutes later.
The Moldovans bring up the rear on two points, one behind the Crusaders in fifth position.
In Group G, Spain and Italy continue their battle for supremacy after victories over Macedonia and Liechtenstein respectively left them deadlocked at the summit on 16 points each.
La Furia Roja beat the Red Lynxes 2-1 at the Philip II Arena, where first-half goals from David Silva (15′) and Diego Costa (27′) sealed the win, with Stefan Ristovski (66′) halving the deficit in the second half.
The Azzurri ran riot against the European minnows as five different players got on the scoresheet in a 5-0 win at Stadio Friuli, with the goals coming from Lorenzo Insigne (35′), Andrea Belotti (52′), Eder (74′), Filippo Bernardeschi (82′) and Manolo Gabbiadini (90′).
Albania climbed above Israel into third spot following their 3-0 victory at the Sammy Ofer Stadium, with Armando Sadiku (22′, 44′) and Ledian Memushaj (71′) scoring the goals.
In Group I, Iceland moved level with leaders Croatia on 13 points after Hordur Magnusson’s 90-minute goal handed the hosts a 1-0 win at Laugardalsvollur.
Turkey kept in touch with the top-two after running out convincing 4-1 victors over Kosovo at the Loro Borici Stadium.
The visitors got off to a flying start when Volkan Sen broke the deadlock after just six minutes, but they were pegged back on 22 minutes by Asmir Rrahmani’s equaliser.
Parity lasted only nine minutes as Cengiz Under fired the Crescent-Stars back in front before Burak Yilmaz (60′) and Ozan Tufan (82′) wrapped up the win in the second half.
The Turks are just two points off the summit in third place, while the Dardanians remain at the bottom of the pool with a single point.
Ukraine kept their own hopes alive of reaching the finals in Russia after beating Finland 2-1 at the Tampere Stadium.
After a goalless first half, Yevgeni Konoplyanka put the visitors ahead six minutes after the restart, but Joel Pohjanpalo drew the Eagle-Owls level with 18 minutes left on the clock.
However, Artem Besedin struck again for the Ukrainians three minutes later to secure all three points.
Sunday’s results in full:
Moldova 2-2 Georgia
Republic of Ireland 1-1 Austria
Finland 1-2 Ukraine
Serbia 1-1 Wales
Macedonia 1-2 Spain
Israel 0-3 Albania
Italy 5-0 Liechtenstein
Iceland 1-0 Croatia
Kosovo 1-4 Turkey