Enthusiasm for football was growing throughout Italy, and Lucca played its part in fuelling what has become since then, the most popular sport: up to 2500 people gathered at the Campaccio, this is the name of the stadium located at the Campo di Marte, to watch an endless sequence of heated derbies, very often enlivened by accidents.

The first convocations of Lucchese players to the “Azzurri” (national football team) date back to 1921 and arrived thanks to the team's positive results: the honour was reserved for Johnny Moscardini and Bonino.
They were the first players from Central Italy teams to have the honour of wearing the national team jersey. In that season Lucchese also reached the semi-finals of the Coppa Italia. 

It is in this decade that the symbol known by all began to appear on the coats of arms and for a few seasons also on the jersey. The Panther is the emblem of the long history of national autonomy first of the Republic of Lucca, then of the Principality and of the Duchy, a history that guaranteed the city independence from everyone until 1847, until a handful of years to the Unification of Italy. 

Right at the end of the decade, speaking from a sporting point of view, lived through ups and downs a constant in “RossoNeri” history, came the first promotion to Serie B: Lucchese overcame Rivarolese in a play-off, played on the neutral field of La Spezia, and finally flew in the top category. 

Among the symbolic players of that period, it is impossible not to mention the d.o.c. Lucchese Lorenzo Lazzaroni, who will arrive at 168 appearances in the “RossoNeri” jersey. 
The climate and enthusiasm are not lacking to finally try and think big.
To the golden cycle, it is necessary to reach the 1930s , when men of great depth and adequate programming will finally allow all to dream.