Grego

Grego's current-season form is level with last season (Season 62→62), while his Rating held around 30. His peak season for form remains 2025/26 (Season 62).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2026/27	Burgos · 11th	2	0	0	6.6	30	62
2025/26	Burgos · 7th	40	2	1	6.99	30	62
2024/25	Burgos · 12th	18	0	0	6.98	28	23
2024/25	Universitatea Craiova	8	0	0	6.7	—	—
2023/24	Burgos · 9th	32	2	0	6.71	35	23
2022/23	Burgos · 11th	25	1	0	6.84	39	35

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 7 earlier seasons and 1 youth-team spell in the full career.

Scout report

Experienced headCentral defender

Grego is a 33-year-old central defender at Burgos, enjoying a standout season — 2 goals and 1 assists in 40 appearances, a Season grade of 62. On long-term scout potential he's rated 29.6. A seasoned veteran, he has been an ever-present (94.8% of available minutes). His defensive output reads 3.04 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Grego.

On the season, Grego graded 62 for current form (age-blind), on 18 clean sheets and 3.038 defensive actions per 90.

Year-on-year, that's broadly in line with last season (Season 62 → 62). Over the 7 seasons on record his form has trended upward, peaking in 2025/26.

On long-term talent our Rating reads 30. At 33 Grego is into the veteran stage, where the age curve weighs on the projection, and a market index of 7.3 reflects that trajectory.

From the career report

Read the full career report →

A career still climbing — Grego is at his peak right now, and the curve hasn't flattened.

Peak: 2025/26Trending upBreakout: 2025/26

29.6

Ratingi

below regular-starter level

62.2

Seasoni

a strong, regular top-tier starter

94.8%

Minutes

near ever-present

3.04

Def. actions / 90

moderate defensive volume

Output in context · Burgos finished 7th of 22 · an upper-table side

Apps

3.04

Def. / 90

Tackles

Interceptions

Clean sheets

3.04 tackles, blocks & interceptions per 90 — moderate defensive volume, with 18 clean sheets across 40 appearances. Behind an upper-table side (7th of 22) the side controls more games, so the defensive load is lighter — the value sits as much in composure and ball progression as in raw volume. Going forward he chipped in 2 goals and 1 assist — a useful bonus from the back.

Strengths

Availability. On the pitch for 94.8% of available minutes — a dependable presence in the XI.

Watch points

Age curve. At 33, both level and resale value are on the downslope.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 29.6 overall — below regular-starter level. Defensively he reads as moderate defensive volume (3.04 tackles, blocks & interceptions per 90). Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.7× and falling).

Generated from Field Insider's rating model · AI-written analysis to follow.

Per 90 & availability

Minutes played %94.8%

Available fixtures42 of 42

Goals / 900.05

Assists / 900.025

Goal contribution / 900.075

Defensive actions / 903.038

Player flow

Goal involvements3

Cards / 900.176

Season-by-season progression

Rating (potential)Season (form)

Value & potential by age

Market valueRating

Solid = now · dashed = projected

The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 23–27 (~21), then tapers with age. At 33, Grego sits on 7.3, past its peak and easing. The blue line is Grego's projected Rating — 29.6 today — recomputed at each age, so it follows the same rise-and-fall as a career matures and declines. Solid = up to today; dashed = projected.

Season statistics

Bars = where he ranks among centre-backs in the Segunda División with 600+ minutes this season.

Shooting

Goals2

Passing

Assists1

Defending

Tackles44

Interceptions47

Blocks30

Yellow/red cards

Yellow cards7

Red cards0

Transfer history

BurgosJan 2025 – nowFree Transfer

Universitatea CraiovaJul 2024 – Jan 2025Free

BurgosJul 2021 – Jul 2024Free

SSabadelluntil Jul 2021

NNumanciaJul 2017 – Jul 2021Free

ValenciaJul 2016 – Jul 2017€ Free

LLorcauntil Jul 2016

NNojaJul 2013 – Jul 2016

Atletico Madriduntil Jul 2013

About Grego

Gregorio Sierra Pérez is a 33-year-old centre-back who plays for Burgos, born on March 5, 1993 in Murcia, standing 184 cm tall. He is from Spain. Burgos currently sit 11th of 22 in the Segunda División.

This season

In the current season, Grego has made 2 appearances with 0 goals and 0 assists across 180 minutes, with 1 yellow card.

Grego's next match is on August 31, 2026, when Burgos face Real Sociedad II at home in the Segunda División.

Field Insider's view

Field Insider currently rates Grego at 29.6 with a Season form score of 62.2. See the full scout report for strengths, watch-points and the market-value outlook.

Career

Across 13 recorded seasons, Grego has totalled 297 club appearances with 11 goals and 1 assist for 8 different clubs. His busiest campaign came in 2025/26, with 40 appearances for Burgos.

Grego's career has also included time at Universitatea Craiova, SSabadell, NNumancia, Valencia, LLorca, NNoja and Atletico Madrid.

Transfer news

No transfer news found for this player.