Under Lage, Benfica finished the league with 103 goals scored, equaling the club's record of the 1963–64 season.
Lage then started a second season at Benfica with a 5–0 win over Sporting CP in the Super Cup.
On 17 September, he made his UEFA Champions League debut in a 2–1 home defeat to German side RB Leipzig, continuing Benfica's record in the competition of having lost 11 times in the last 14 games.
A 3-0 victory over Zenit Saint Petersburg in Benfica's final group stage game meant that Benfica finished in 3rd place and progressed to the Europa League, finishing above the Russian team by virtue of a superior head-to-head record.
The victory ensured that Benfica "finished the Champions League campaign on a high, but there is a sense that they should have done better."
Following a win at Tondela on 27 October, Lage set the record for the quickest coach to record 25 victories in the Primeira Liga, having won 25 of his first 27 league matches and triumphing in every away game.
1964
On 10 February, after winning two consecutive Lisbon derbies – including a 4–2 away win in the league – Lage led Benfica to the biggest Primeira Liga margin of victory since 1964 and to the league's highest scoring win since 1965, a 10–0 thrashing of Nacional, setting the record for the biggest win at the new Estádio da Luz.
On 14 February in his UEFA Europa League debut, Benfica won in Turkey for the first time in their history, beating Galatasaray 2–1 in the first leg of the round of 32.
A 0-0 draw at the Estádio da Luz sent Benfica through to the round of sixteen, where they defeated Dinamo Zagreb 3-1 on aggregate after extra-time.
Benfica were eliminated from the Europa League at the quarter-finals stage by Eintracht Frankfurt on the away goals rule, having won 4-2 at home before falling to a 2-0 defeat at the Waldstadion on 18 April.
1976
Bruno Miguel Silva do Nascimento (born 12 May 1976), known as Bruno Lage, is a Portuguese football manager who was most recently the head coach of Campeonato Brasileiro Série A club Botafogo.
1990
In addition, he equalled Sven-Göran Eriksson's 1990–91 feat of beating Porto, Sporting, and Braga away in the same season.
1997
Lage started his coaching career in the youth ranks of hometown club Vitória de Setúbal in 1997.
Lage was appointed as a physical/fitness coach by former Vitória and Famalicão manager José Rocha, of whom he was described as a protégé.
2004
In 2004, Lage joined Benfica as a youth coach.
Lage coached every youth team from 2004 to 2012.
Defender João Cancelo has praised the role of Lage in his development and credited him as a father figure.
2014
Lage co-authored a book on football tactics alongside Carvalhal, Soccer: Developing a Know-How (2014).
2015
Lage later worked as an assistant coach to Carlos Carvalhal at Sheffield Wednesday and Swansea City from 2015 to 2018.
2016
From matchday 16 to 34, Lage won 18 league matches and drew just one to win his first major trophy, Benfica's 37th league title.
With a 94% winning percentage, he surpassed Jimmy Hagan's record at Benfica and achieved Primeira Liga's all-time best second round: 49 points from 19 games.
2018
During his short tenure as coach of Benfica in Portugal, he won the 2018–19 league title and the 2019 Super Cup.
Born in Setúbal, Lage's father Fernando Lage Nascimento was formerly a manager in the Portuguese lower leagues.
Lage returned to Benfica as manager of their reserve team in July 2018 to replace Hélder Cristóvão.
2019
During Benfica's 2018–19 season, Lage took charge of the club's first-team as caretaker manager, replacing Rui Vitória on 3 January 2019.
He managed his first Primeira Liga game in a 4–2 home win over Rio Ave on 6 January, and was appointed permanent head coach eight days later.
One of Lage's first decisions was to begin regularly starting teenage playmaker João Félix, who had scored twice in the triumph over Rio Ave. Upon being appointed as Benfica coach, Lage had decided to focus on developing youth and adopting an attacking style of play.
He deployed a new 4-4-1-1 formation in order to play to the strengths of Felix as a shadow striker behind Haris Seferovic, giving him freedom to roam while encouraging his full-backs to attack and using technically-gifted midfielders in order to both defend and create.
Lage also promoted younger players to the first-team, such as Florentino and Ferro, who would go on to play important roles that season.
Felix started 28 of 29 matches in all competitions under Lage, scoring 17 goals and recording 10 assists.
Lage was credited with the emergence of a young player viewed as "the most exciting Portuguese player since Cristiano Ronaldo" and for building the team around Felix.
Felix called Lage "the manager who put me where I am today."
With Benfica's 2–1 away victory in The Classic on 2 March 2019, Lage won his third of four clashes against rivals Sporting CP and Porto, equaling the same number of wins Rui Vitória achieved in 16 matches.
Lage's Benfica would go on to win every away league game under him in 2019, having scored 42 goals in 15 games.
2020
In January 2020, Benfica set a new record for the number of consecutive wins away from home, having achieved victory 17 consecutive times since Lage had been appointed.
This record was extended to 18 successive away wins after defeating Paços de Ferreira at Estádio da Mata Real, however the team's winning run was ended with a 3-2 defeat at Porto.
On 29 June 2020, Lage made his position available after equalising Benfica's worst ever series of results – 2 wins in 13 matches in the 2000–01 season – and establishing a record of 5 consecutive matches without a win at Estádio da Luz, which included defeats to Braga and Santa Clara.
Lage's reign at Benfica was summarised as him having a strong record of managing his players and promoting youth; however, players felt disengaged by training, and that Lage and the team had failed to adjust to the loss of João Félix.
He was replaced by his assistant coach Nélson Veríssimo on 30 June, and had his contract terminated on 4 July that year.
In June 2021, Lage was lined up to succeed compatriot Nuno Espírito Santo at Premier League club Wolverhampton Wanderers.