Burgstaller is now the Bundesliga 2's top goalscorer with 14 league goals this season. The former Nuremberg frontman - who struck 24 times in 95 Bundesliga appearances for Schalke between 2017 and 2020 - has never netted more times in a campaign in Germany.
The Austrian had 21 touches and five shots at goal in the first half. He's now scored twice in a Bundesliga 2 game on seven occasions - including three times this season.
Pauli have won eight from eight at home this term.
Schalke missed the chance to draw level on points with second-placed Darmstadt after suffering their sixth league defeat of the campaign.
Uruguayan attacker Zalazar got his second goal in as many games after failing to score in his first 12 appearances in the league this season. In 2020/21 he got six goals and five assists for St. Pauli in Bundesliga 2 while on loan from Eintracht Frankfurt.
The Royal Blues had won their last four league meetings with Pauli by an aggregate score of 11-0, spread across the 2001/02 and 2010/11 Bundesliga seasons.

Line-ups

Pauli: Vasilj – Zander, Ziereis (c), Lawrence, Paqarada – Irvine, Smith (Medic 85'), Hartel – Kyereh (Makienok 90') – Burgstaller (Buchtmann 90'), Matanovic (Dittgen 73')
Unused subs: Smarsch, Ohlsson, Becker, Benatelli, Amenyido
Out: Areemu (thigh), Avevor (ankle), Daschner (knee), Knoll (calf), Wieckhoff (knee)
Coach: Timo Schultz

Schalke: Fraisl – Thiaw, Itakura, Kaminski – Aydin (Ranftl 73'), Zalazar, Palsson (c) (Latza 73'), Drexler, Ouwejan – Dadashov (Topp 81') Pieringer
Unused subs: Wienand, Calhanoglu, Idrizi, Kaparos, Matriciani, Wouters
Out: Churlinov (shoulder), Langer (knee), Terodde (calf)
Coach: Dimitrios Grammozis

Matchday 16 round-up:

Darmstadt 1-3 Fortuna Düsseldorf
Goals: 0-1 Hennings (16'), 0-2 Gjasula (o.g. 41'), 0-3 Narey (76'), 1-3 P. Tietz (85')

Fortuna Düsseldorf climbed away from the bottom three with an impressive 3-1 win at high-flying Darmstadt on Friday evening. Rouwen Hennings gave the guests the lead and an own goal by Gjasula gave them more than they had bargained for before the break. Darmstadt attacked and attacked in the second half, but ended up falling further behind when Narey struck a third. Tietz scored a consolation from the penalty spot late on, but it was no more than that for the Lilies, who remain second, but slip six points behind league-leaders St. Pauli.

Werder Bremen 4-0 Erzgebirge Aue
Goals: 1-0 Schmid (7'), 2-0 Veljkovic (19'), 3-0 Ducksch (53'), 4-0 Füllkrug (57')

Werder Bremen's new coach Ole Werner celebrated a winning start to life in charge of the northern Germany side with Milos Vejkovic netting an eye-catching scorpion-kick goal in a 4-0 win over Erzgebirge Aue. Veljkovic repaid his new coach's faith in restoring him to the starting XI with a memorable goal - a scorpion kick - adding to Romano Schmid's opener after he too marked his return to the first team with his first Werder goal. Marvin Ducksch added a third early in the second half and Niclas Füllkrug wrapped up a much-needed win for Bremen four minutes later, as they rose to ninth in the table.

Watch: Werder Bremen 4-0 Erzgebirge Aue

STP St. Pauli St. Pauli - S04 Schalke Schalke

Matchday 16 round-up: Pauli secure midway top spot